LABORATORY SAFETY GUIDELINES 实验室安全指南英文版

合集下载

实验室安全管理文献

实验室安全管理文献

实验室安全管理文献以下是一些实验室安全管理方面的经典文献:1. "Laboratory Safety for Chemistry Students" by Robert H. Hill Jr. and David C. Finster - 这本书是为化学学生编写的,详细介绍了实验室的安全标准和实践。

2. "Prudent Practices in the Laboratory: Handling and Management of Chemical Hazards" by the National Research Council - 这本书提供了关于化学品处理和管理的详细指南,包括实验室安全措施和危险评估方法。

3. "Laboratory Safety: Principles and Practices" by Robert A. Hill and David C. Finster - 这本书提供了基本的实验室安全知识,包括安全规程制定、事故预防和应急处理等方面的内容。

4. "Chemical Health and Safety" by Neal Langerman - 这本书介绍了化学品在实验室中的安全使用和管理方法,包括风险评估、个人防护设备的选择和实验室废弃物处理等方面。

5. "Guidelines for Laboratory Design: Health and Safety Considerations" by Louis J. DiBerardinis et al. - 这份指南提供了实验室设计过程中的健康与安全考虑事项,包括空气质量控制、防火安全和卫生设施等方面的建议。

以上文献可以帮助实验室工作人员和学生了解实验室安全管理的基本原则和实践,并提供针对不同实验室环境和化学品的具体建议和指导。

实验室操作规程英文翻译

实验室操作规程英文翻译

实验室操作规程英文翻译Laboratory Operating ProceduresIntroduction:Laboratory safety is of paramount importance to ensure the well-being of laboratory personnel and to prevent accidents or incidents that may compromise experimental results. These laboratory operating procedures aim to provide guidelines for safe and efficient laboratory practices. All personnel working in the laboratory are expected to adhere to these procedures at all times.1. General Safety Guidelines:1.1. Personal Protective Equipment (PPE): All laboratory personnel must wear appropriate PPE, including lab coats, gloves, and safety glasses, when working in the laboratory.1.2. Personal Hygiene: Maintain good personal hygiene by washing hands thoroughly before and after any laboratory activity.1.3. Fire Safety: Know the location of fire exits, fire extinguishers, and emergency showers. In the eventof a fire, immediately evacuate the laboratory and follow the designated emergency procedures.1.4. Chemical Safety: Properly handle chemicals and follow the Material Safety Data Sheet (MSDS) guidelines provided for each chemical. Avoid direct contact with skin, eyes, and inhalation of chemical fumes.1.5. Electrical Safety: Inspect electrical equipment regularly for frayed wires or damaged plugs. Only authorized personnel should make repairs or adjustments to electrical equipment.1.6. Equipment Safety: Follow manufacturer instructions for the operation, maintenance, and disposal of laboratory equipment. Do not use equipment without proper training or authorization.2. Laboratory Procedures:2.1. Experiment Planning: Before conducting any experiment, thoroughly read and understand the experimental procedures. Identify potential hazards and plan accordingly to mitigate risks.2.2. Workspaces: Keep workspaces clean, organized, and free from unnecessary clutter. Maintain clear pathways to avoid accidents and spills.2.3. Handling Glassware: Handle glassware with caution to prevent breakage and injuries. Dispose of broken glassware in designated sharps containers.2.4. Chemical Storage: Store chemicals in appropriate containers and cabinets, following chemical compatibility guidelines. Clearly label all chemical containers with their contents and expiration dates.2.5. Waste Disposal: Dispose of laboratory waste in designated waste containers. Separate hazardous waste from non-hazardous waste and ensure proper disposal according to regulatory requirements.2.6. Spill Procedures: Promptly report and clean up any spills, following the appropriate spill containment and cleanup procedures. Use suitable absorbent materials and dispose of them as hazardous waste.2.7. Laboratory Instruments: Use laboratory instruments, such as balances, pipettes, and centrifuges, according to manufacturer instructions. Calibrate and maintain instruments regularly to ensure accurate results.3. Emergency Procedures:3.1. First Aid: Familiarize yourself with the location of first aid kits and emergency eyewash stations. Report all injuries, accidents, or near misses to the laboratory supervisor immediately.3.2. Chemical Spills: In the event of a chemical spill, immediately notify the laboratory supervisor and follow the spill procedures. Evacuate the affected area if necessary.3.3. Fire Emergencies: In the event of a fire, activate the fire alarm, evacuate the laboratory, and follow the designated emergency procedures. Do not use elevators during a fire emergency.3.4. Gas Leaks: In the event of a gas leak, immediately evacuate the laboratory and inform the laboratory supervisor. Do not use any electrical devices or create any sources of ignition.Conclusion:These laboratory operating procedures provide guidelines for safe laboratory practices. It is the responsibility of all personnel to familiarize themselves with these procedures and adhere to them at all times. Any deviations or unsafe conditions should be reported to the laboratory supervisor immediately. By following these procedures, we canensure a safe and productive laboratory environment for all.。

实验室安全管理制度英语

实验室安全管理制度英语

The Laboratory Safety Management System (LSMS) is a comprehensive set of policies, procedures, and guidelines designed to ensure the safety ofall personnel working within the laboratory environment. This document outlines the fundamental principles and practices that must be adhered to by all individuals using the laboratory facilities. The following sections detail the various aspects of the LSMS.I. IntroductionThe primary objective of the Laboratory Safety Management System is to establish a safe working environment that minimizes the risk of accidents, injuries, and health hazards. This system is applicable toall laboratory personnel, including staff, students, and visitors. Compliance with the LSMS is mandatory for everyone using the laboratory facilities.II. General Safety Policies1. Personal Protective Equipment (PPE): All individuals are required to wear appropriate PPE, such as lab coats, gloves, safety goggles, and closed-toe shoes, when working in the laboratory. PPE must be worn atall times when handling hazardous materials or equipment.2. Hazard Communication: The laboratory must maintain an up-to-date Material Safety Data Sheet (MSDS) for all hazardous chemicals used in the facility. Employees must be trained on the proper handling, storage, and disposal of hazardous materials.3. Emergency Preparedness: The laboratory must have a clear and accessible emergency plan, including evacuation routes, first aid kits, and emergency contact information. All personnel must be familiar with the emergency procedures and participate in regular drills.III. Equipment and Facilities1. Maintenance and Inspection: All laboratory equipment must beregularly inspected and maintained to ensure safe operation. Routine maintenance schedules should be established and followed.2. Lockout/Tagout Procedures: Equipment that presents a hazard when energized must be de-energized and locked out during maintenance or repair. Lockout/tagout procedures must be followed to prevent accidental energization.3. Chemical Storage: Chemicals must be stored in designated areas, following the principles of segregation and compatibility. Flammable, corrosive, and toxic substances must be stored separately from other chemicals.IV. Training and Education1. Initial Training: All new laboratory personnel must undergo initial safety training, which includes an introduction to the LSMS, hazard identification, and emergency procedures.2. Continuing Education: Regular refresher courses and training sessions must be provided to ensure that all personnel remain knowledgeable about laboratory safety practices.V. Compliance and Auditing1. Regulatory Compliance: The laboratory must comply with all applicable local, state, and federal regulations regarding safety and health.2. Internal Audits: Regular internal audits will be conducted to assess the effectiveness of the LSMS and identify areas for improvement.VI. Reporting and Record Keeping1. Incident Reporting: All accidents, injuries, and near-misses must be reported immediately to the appropriate supervisor or safety officer. A detailed report must be submitted within 24 hours.2. Record Keeping: The laboratory must maintain accurate records of all safety training, inspections, audits, and incident reports. These records must be readily accessible for review by regulatory agencies or internal auditors.VII. ConclusionThe Laboratory Safety Management System is a critical component of the laboratory environment. By adhering to the policies and procedures outlined in this document, we can create a safe and productive working environment for all personnel. The commitment to safety is a shared responsibility, and we all play a role in ensuring that our laboratory remains a safe place to work, learn, and conduct research.。

实验室安全教育

实验室安全教育
二氧化碳灭火器适用范围:主要适用于各种易燃、可燃液体、可 燃气体火灾,还可扑救仪器仪表、图书档案和低压电器设备等的
初起火灾。
如何使用灭火器
手提式干粉灭火器:
迅速从火场附近的的干粉灭火器箱内取出灭火器,手 提灭火器压把赶到火场。
将灭火器上下摇动几次,除去灭火器铅封,拔出保险 销。
侵入途径:吸入、食入、经皮吸收。 健康危害:本品具有刺激和麻醉作用。吸入后引起上呼吸道刺激、恶心、头晕、头痛和中枢神经系统抑制。能引起
肝、肾损害。液体或高浓度蒸气对眼有刺激性。
防护要求
呼吸系统防护:可能接触其蒸气时,应该佩戴过滤式防毒面具(半面罩)。必要时,建议佩戴自给式呼吸器。 眼睛防护:一般不需要特殊防护,高浓度接触时可戴安全防护眼镜。 身体防护:穿防静电工作服。 手防护:戴防苯耐油手套。
6. 节假日放假前.实验室要组织一次全面的安全检查与安全 教育活动
7. 实验室的建筑维修、设备安装以及管道等的施工现场,均 应有专人负责安全工作。
8. 实验室如果发生爆炸、火灾、中毒、失盗等事故,必须及 时报告上级领导
9. 各实验室应配备相应的足够数量的消防器材
实验室安全操作规程
Laboratory Safety
防护手套的使用
防护手套的品种很多,根据防护功能来选用。 防水、耐酸碱手套使用前应仔细检查,观察表
面是否有破损。 绝缘手套应定期检验电绝缘性能,不符合规定
的不能使用。 保存时避免高温,并在制品上撒上滑石粉以防
粘连。 操作旋转机床禁止戴手套作业。
主要物质的危险 有害特性
Hazardous or harmful characteristics of major substances

化学实验室安全指南说明书

化学实验室安全指南说明书

Committee on Professional TrainingLaboratory SafetyLaboratory safety involves the development of skills and responsibility and must be an integral part of every chemistry curriculum. This means that safety awareness must be integrated into each laboratory course including research with increasingly broader scope at more advanced levels. The creation of a culture of laboratory safety requires a broad commitment from all levels of the educational institution. At the department level, faculty need to assume responsibility for continuing review of safety issues with students in teaching and research laboratories, especially the persons responsible for undergraduate instruction, often graduate students or instructors. Faculty must lead by example in a coordinated departmental safety effort. At the administrative level, this will involve implementation of a chemical hygiene plan that is in agreement with any campus chemical hygiene/safety efforts and must address the safe handling, storage, and disposal of chemicals. Eye wash and showers must be in operating condition, and fume hoods with proper sashes are essential. Anyone working or visiting in the lab must be wearing goggles, and consumption of food or drinks must not be permitted. A clean, uncluttered laboratory is more likely to encourage careful work.Development of safety skills may be divided into four emphasis areas.1•R ecognize Hazards•A ssess Risks•M inimize Risks•P repare for EmergenciesThe ACS Committee on Chemical Safety has recently published three useful resources that provide guidelines for chemical safety in academic institutions.2 and help in the identification and evaluation of hazards in research laboratories.3-4Recognize HazardsA hazard is a potential source of danger or harm and can result from working with chemicals, equipment, and instrumentation. Introduction to this topic can start with an understanding of the terms describing chemical hazards, such as “toxic”, “flammable”, or “corrosive”, and how to obtain information from chemical labels, Safety Data Sheets (SDS), and other reference sources. Chemical hazards encountered in early undergraduate laboratories should be explained in more detail – for example, acids, bases, flammables, and toxic compounds. At more advanced levels, more details of chemical and physical hazards should be explained so that students are able to identify hazards themselves in experiments – for example, types of toxic compounds, compressed gases, cryogenics, pressurized systems, peroxides, reactives, unstable compounds, pyrophorics, explosives, and water-reactives. Other topics might include toxicology, nanomaterials, biohazards, and radiological hazards, which become relevant when the chemistry curriculum becomes broader in scope.5Assess RisksOnce a hazard(s) is recognized, laboratory safety necessarily requires an assessment or evaluation of risk from potential exposure to the hazard. Identifying potential routes of exposure is followed by judging the relative risk posed by the hazards of the experiment. The hazardous physical, chemical, and toxic properties of solvents, reactants, catalysts, products, and wastes should be considered as well as circumstances of the experiment – for example, how much is being used, is the right equipment available, can the hazard be controlled or minimized?Are the reactions exothermic or water- or air-sensitive? Are there risks associated, for example, with the use of lasers or equipment utilizing high voltages (electrophoresis)?Minimize RisksBased on a risk assessment, experiments should be designed to minimize potential risks. These steps may involve carrying out experiments in a fume hood with a protective shield and wearing protective gloves and goggles. The handling and storage of wastes is a critical component. It is often useful to consider case histories of incidents that have resulted in injury or damage. What could have been done to prevent or minimize such incidents? Discussion can be implemented by giving students a picture of a risky or hazardous environment and then asking them, “What is wrong with this picture?”Prepare for EmergenciesSince it is essential to react promptly and deliberately to emergencies, students should learn what to do in various emergencies and be prepared to act accordingly – for example, fires, injuries, and spills. Safety devices such as showers, eye washes, fire extinguishers, and spill kits, must be clearly labeled and their use and location known to all those working in a laboratory. Emergency phone numbers, alarms, and escape routes should be clear to everyone.The Culture of Laboratory SafetyFaculty and staff must be leaders in safety: teaching safety to students, continuously promoting safety, demonstrating the importance of safety through their actions, and accepting responsibility for safety. At some institutions the graduate students teach the undergraduate labs, in which case the graduate students TAs must be champions of safety ethics. The Safety Ethic is, above all, a value, stated as: I value safety, work safely, prevent any risk-behavior, promote safety, and accept responsibility for safety.6-7 It emphasizes personal responsibility of each person involved. In order for this culture to thrive, everyone must be promoting it. It is, of course, necessary to be familiar with Occupational Safety and Health Administration (OSHA), Environmental Protection Agency (EPA), Department of Transportation (DOT), and Department of Energy (DOE) regulations, but responsibility goes beyond simply complying with federal, state and local regulations – it is about caring for the safety of fellow students, faculty, and staff. There are several chemical and laboratory safety resources that can be very useful in building a strong culture of safety.8-11Curricular ApproachesLaboratory safety education and training is an ongoing process and therefore must be integrated into every laboratory course. In research laboratories, the responsibility for necessary instruction will lie with the research director. Because of time and resource constraints, presentation and discussion may be limited in lab lectures prior to the start of a laboratory or pre-lab assignments.Three possible approaches are suggested:1. A seminar course devoted entirely to laboratory safety;2. Laboratory safety as part of a seminar devoted to chemistry as a profession; and,3. Online materials where students would be required to do reading and then pass exams, the grades beingrecorded.It is very important to emphasize that safety is about learning how to carry out laboratory work safely and not only about rules and regulations, so students are required to think about responsibility for safety in the conduct of their work. Working safely is a basic responsibility of every employee and every student. Reduce unnecessary risks,- 2 -insure that regulations are followed by others, and always bring safety concerns to the attention of a supervisor or a departmental safety committee. A departmental safety committee should be established if it does not exist. References1. Hill, Robert H, Jr. and David C. Finster, Laboratory Safety for Chemistry Students, Wiley, Hoboken, 2010. Thisis a comprehensive text that partitions safety considerations into three tiers, with increasingly more involved considerations being reflective of increased knowledge by students. Emphasis is on learning on a “need to know basis”.2. Guidelines for Chemical Laboratory Safety in Academic Institutions, ACS Committee on Chemical Safety,Washington, DC., 2016. A comprehensive document providing a broad overview of the range of safetyconsiderations for undergraduate, graduate and continuing safety education.(/content/dam/acsorg/about/governance/committees/chemicalsafety/publications/acs-safety-guidelines-academic.pdf?logActivity=true)3. Identifying and Evaluating Hazards in Research Laboratories, ACS Committee on Chemical Safety,Washington, DC., 2015. A comprehensive overview of methodologies that can be used to assess and control hazards that can be successfully used in a research laboratory.(/content/dam/acsorg/about/governance/committees/chemicalsafety/publications/identifying-and-evaluating-hazards-in-research-laboratories.pdf)4. Hazard Assessment in Research Laboratories, ACS Committee on Chemical Safety, Washington, DC. An on-line resource that helps with the identification of hazards, the assessment of risk, and selection of appropriate control measures to eliminate a hazard or reduce the risk of accident or injury.(/content/dam/acsorg/about/governance/committees/chemicalsafety/publications/acs-safety-guidelines-academic.pdf?logActivity=true)5. Prudent Practices in the Laboratory, The National Academies Press, Washington, 2015. A comprehensivestudy of laboratory safety issues including leadership and management considerations.(/catalog.php?record_id=12654)6.Creating Safety Cultures in Academic Institutions: A Report of the Safety Culture Task Force of the ACSCommittee on Chemical Safety. A comprehensive document dealing with the promotion of safety culture across the entire educational institution.(/content/dam/acsorg/about/governance/committees/chemicalsafety/academic-safety-culture-report-final-v2.pdf)7. Safe Science – Promoting a Culture of Safety in Academic Chemical Research, National Academies Press,2014. This document describes the culture of safety in research institutions and provides recommendations to support safety as a core value of these institutions.8. ACS Committee on Chemical Safety, Washington DC. This ACS Committee serves as a resource to the ACSand the public on chemical and laboratory safety. In maintains current information on safety practices and recommendations, classroom safety, symposia, and safety-related activities.(/content/acs/en/about/governance/committees/chemicalsafety.html)9. ACS Division of Chemical Health and Safety, Washington, DC. This division organizes chemical health andsafety symposia at National ACS meetings; publishes the Journal of Chemical Health and Safety, provides the DCHAS Listserve – an internet resource for division members providing a forum for questions and answers for chemical health and safety issues. (/)10. S afety Data Sheets (SDS) are required by the U.S. Occupational Safety and Health Administration under theirHazard Communication Standard. (/Publications/OSHA3514.html)11. C hemical Laboratory Safety and Security: A Guide to Prudent Chemical Management, L. Moran, T.Masciangioli (editors) An accompanying toolkit (7 components) is available for use with this manual.(/global/bcst/Chemical-Management)Last revised in August 2017- 3 -。

GB19489-2008《实验室 生物安全通用要求》相关内容

GB19489-2008《实验室 生物安全通用要求》相关内容

BSL-2标准微生物操作规程
5、必须制定并执行如针头、刀片、碎玻璃等锐器的安 全处置方案。只要可能,实验室主管要采用可以降低 锐器损伤风险的装置和实验控制措施。在处理锐器时 通常必须特别注意,做到如下几点: a、首要一点是必须小心处理针头及其他锐器。针 头在丢弃并不得弯曲、截断、打破、回套针头护套、 从一次性注射器上取下以及徒手操作。 b、使用过的一次性针头和注射器必须小心置于恰 当位置的用于盛放锐器的耐刺破容器中。 c、非一次性锐器必须置于硬壳容器中转移到 消毒的地方,最好采用高压灭菌。 d、打破的玻璃器具不能直接用手处理。而必须用 扫帚、簸箕、钳子或镊子来清除。 只要可能,尽量用塑料器皿代替玻璃器皿。
BSL-2实验室的个体防护
3、 必须佩戴手套以免双手暴露于危险材料。要根据风险评估结 果来选择适当的手套。要备有乳胶手套的替代品。手套不得带离 实验室外。此外,BSL-2工作人员还应: a、每当污染、破损或其他必要的时候,均要更换手套。适当时 要带双层手套。 b、每当操作危害性材料的工作结束时,以及离开实验室之前, 要脱去手套并洗手。 c、一次性手套不得清洗或重复使用。将使用过的手套和其他实 验室污染废弃物一 起处理。要严格遵守洗手的规程。 4、 房间内有感染性动物时,要在风险评估后确定是否需要使用 眼睛、面部和呼吸防护装备。
《可感染人类的高致病性病原微生物菌(毒)种或样本运输管理规定》,卫 生部,2006.02 《高致病性动物病原微生物菌(毒)种或者样本运输包装规范》,农业部, 2005.05


实验室活动(第21条)
■ 一级、二级实验室
不得从事高致病性病原微生物实验活动。
■ 三级、四级实验室 从事高致病性病原微生物实验活动应具备下列条件: (一)实验目的和拟从事的实验活动符合国务院卫生主管部门规定; (二)通过实验室国家认可; (三)具有与拟从事的实验活动相适应的工作人员; (四)工程质量经建筑主管部门依法检测验收合格。 ■ 经国务院卫生审查后,对符合条件的三级、四级实验室发给从事 高致病性病原微生物实验活动的资格证书。

物理实验室管理规定英文版

物理实验室管理规定英文版

LABORATORY REGULATIONSfor The Natural Sciences Faculty II— Physics -University of Regensburg13.12.19951。

AimsThese Laboratory Regulations are intended to ensure safe working practices,environmental protection and operating efficiency with regard to laboratory use. Essentially these targets are to be achieved by responsible, competent and correct use of the buildings, installations, machinery and equipment, as well as an economical use of energy, water and other media。

They should help— to safeguard the health and physical safety of laboratory users,- to keep damage to a minimum in the case of accidents- and to avoid environmental pollution.2。

Scope and legal fundamentalsThe Laboratory Regulations are valid for all users of laboratories in the Natural Sciences Faculty II.These regulations take into account Accident Prevention Regulations(Unfallverhütungsvorschriften UVV),in particular the UVV for Lasers (GUV 2。

实验室规章制度英语

实验室规章制度英语

实验室规章制度英语1. General Guidelines1.1 All individuals entering the laboratory must wear appropriate lab attire including a lab coat, closed-toe shoes, and safety goggles.1.2 Eating, drinking, and smoking are strictly prohibited in the laboratory.1.3 Personal belongings such as bags, jackets, and food items should be stored in designated areas outside of the laboratory.1.4 All experiments must be conducted in accordance with approved protocols and safety guidelines.1.5 Report any accidents, spills, or injuries to the lab supervisor immediately.2. Chemical Handling2.1 Only authorized personnel are allowed to handle chemicals in the laboratory.2.2 All chemicals must be properly labeled and stored in the designated storage areas.2.3 Do not mix chemicals unless specifically instructed to do so by the lab supervisor.2.4 Use appropriate personal protective equipment (PPE) when working with chemicals, including gloves, goggles, and lab coats.2.5 Dispose of chemicals according to the lab's waste disposal guidelines.3. Equipment Handling3.1 Only trained individuals are allowed to operate laboratory equipment.3.2 Inspect equipment before use and report any malfunctions or damage to the lab supervisor.3.3 Use equipment only for its intended purpose and follow operating instructions carefully.3.4 Clean equipment after use and return it to its designated storage area.3.5 Do not attempt to repair or modify equipment without authorization.4. Biological Materials4.1 Handle all biological materials with care and follow appropriate safety precautions.4.2 Obtain necessary training and authorization before working with biohazardous materials.4.3 Dispose of biological waste in accordance with the lab's waste disposal guidelines.4.4 Report any spills or exposures to biohazardous materials to the lab supervisor immediately.4.5 Wash hands thoroughly after handling biological materials.5. Emergency Procedures5.1 Familiarize yourself with the location of emergency exits, safety showers, eyewash stations, and fire extinguishers in the laboratory.5.2 In case of a fire, evacuate the laboratory immediately and notify emergency services. 5.3 In case of a chemical spill, contain the spill, notify the lab supervisor, and follow spill cleanup procedures.5.4 In case of a medical emergency, administer first aid if trained to do so and contact emergency services.5.5 Do not hesitate to ask for help or clarification if you are unsure about how to respond to an emergency situation.6. Personal Conduct6.1 Treat all lab members with respect and courtesy.6.2 Avoid unnecessary distractions and maintain focus on your work.6.3 Follow all instructions given by the lab supervisor and ask for clarification if needed. 6.4 Avoid engaging in unsafe or reckless behavior in the laboratory.6.5 Stay informed about lab policies and procedures and adhere to them at all times.7. Training and Supervision7.1 All individuals working in the laboratory must undergo training on laboratory safety and procedures.7.2 Only individuals who have completed the necessary training are allowed to work independently in the laboratory.7.3 New lab members must be supervised by a trained mentor until they demonstrate competence in lab procedures.7.4 The lab supervisor is responsible for ensuring that all lab members are properly trained and supervised.7.5 Additional training may be required for specific experiments or procedures, and lab members should seek guidance from the lab supervisor.8. Enforcement8.1 Violation of any of the laboratory rules and regulations may result in disciplinary action, including but not limited to reprimands, suspension of lab privileges, or dismissal from the lab.8.2 The lab supervisor has the authority to enforce these rules and regulations and may take appropriate action in response to violations.8.3 Lab members are encouraged to report any violations of the rules to the lab supervisor or other appropriate authorities.By following these rules and regulations, we can maintain a safe and productive working environment in the laboratory. Thank you for your cooperation and commitment to lab safety.。

  1. 1、下载文档前请自行甄别文档内容的完整性,平台不提供额外的编辑、内容补充、找答案等附加服务。
  2. 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
  3. 3、如文档侵犯您的权益,请联系客服反馈,我们会尽快为您处理(人工客服工作时间:9:00-18:30)。
相关文档
最新文档