函电操作

函电操作

操作要求

操作一:建立业务关系

欢迎加入上海杰依工贸公司——

一家拥有自己生产厂商的纺织品经营公司

欢迎来到出口三部——

一个以开拓进取为部门精神的温暖集体

作为新加入的业务员,你首先要熟悉公司的客户网络。在整理资料的过程中你发现了如下一张名片:

询问后得知该公司是也门一家颇有信誉的中间商,专营各类纺织品,具有广阔的销售渠道。本公司曾与其做过几笔交易,但由于去年一批货物出了质量问题,发生了点摩擦,至今未再有联系。为了开拓市场,公司决定去信重新建立经常联系,介绍本公司的发展情况,了解当地的市场信息,向其推荐天乐牌晴棉毯(TENDER BRAND BABY BLANKET),并随寄最新商品目录。

经理要求你拟一封建立业务关系的信函并E-mail给对方, 要求格式正确,内容完整,语气诚恳热切。

信函日期:2003年3月2日

[北语]20春《外贸英语函电》作业4

20春《外贸英语函电》作业4 一、单选题 1.We hope you will see your way clear to September shipment. A.accept B.acceptance C.accepted D.accepting 正确答案:D 2.We are in possession of your letter of the 11th July , which we note that you have established the L/C in our favour. A.through B.of C.from D.by 正确答案:C 3.If you are prepared to increase your to 15, we shall be pleased to purchase the complete stock. A.sales volume B.price C.discount D.cost 正确答案:C 4.It is our foreign policy to trade with foreign countries on the basis of equality and mutual benefit. A.trade B.market C.deal D.business 正确答案:A 5.The letter we sent last is an enquiry color TV sets. A.of B.for C.as D.about 正确答案:B 6.Will you please quote us the following items A.with B.in C.for D.about 正确答案:C 7.The goods you delivered are below the standard we expected the sample.

大工20秋《外贸函电》在线作业3辅导资料

大工20秋《外贸函电》在线作业3 提示:本套试卷为课程学习辅导资料,仅做学习参考使用 一、单选题 (共 15 道试题,共 90 分) 1.Our latest design has won worldwide ________. A.popular B.popularity C.popularly D.popularize 【参考选择】:B 2.Our company has wide experience ________ the textiles line. A.on B.in C.about D.of 【参考选择】:B 3.Please effect payment when the draft _______ . A.expires B.due C.fells due D.expiration 【参考选择】:A 4.As we are _______ urgent need of Art. No.5609, please ship our order without delay. A.on B.of C.in D.to 【参考选择】:C 5.Please send us the amendment ______ L/C immediately or we shall not be able to ship your order on time. A.of B.to C.as to D.with 【参考选择】:B 6.We have to claim for your delay in _______ of our order. A.shipping B.ships

大工14秋《外贸函电》在线作业1答案

大工14秋《外贸函电》在线作业1 单选题判断题 一、单选题(共15 道试题,共90 分。) 1. We thank you for your letter dated March 18 ________ our silk blouses of various styles. A. enquiring for B. enquiry for C. enquired for D. enquire for 正确答案:A 2. Which of the following is "投资转让"? A. Board of Directors B. Investment Transferability C. Business Lifetime D. Joint Venture 正确答案:B 3. We are pleased to inform you that we have ________ our business of sales department. A. risen B. raised C. enlarged D. added 正确答案:C 4. We will appreciate it very much if you can quote us your best prices ________ Sony Brand Color TV Sets of 24 and 29 inches. A. in B. for C. at D. on 正确答案:B 5. Which of the following means "价目表"? A. price list B. sample C. enquiry D. request 正确答案:A 6. We have the pine kernels (松子) you asked for ______ stock and will deliver (交货) as soon as we ______ your order. A. in; receive B. in; receiving C. from; received

外贸英语函电作业

1.对这些商品他们尤其关心的是包装方式。 They are particularly concerned about the mode of packing for this kind of goods. 2.顺便问一下,你们接受中性包装吗? By the way, do you accept neutral packing? 3.外包装应坚固,以适合运输。至于内包装,必须具有吸引力,以促进销售。The outer packing should be strong enough for the transportation. As for the inner packing, it must be attractive and helpful to the sales. 4.由于纸板箱相对来说轻便坚实,因此更便于装卸。 Since cartons are comparatively light and compact, they are more convinenet to handle in the course of loading and unloading. 5.我们相信,为防运输途中受损,你方会特别注意包装。 We trust that you will special care to the packing in order to avoid tha damage in transit. 6.我们高兴地通知你们,你方所订购的货物已备受待运。请通知包装及装运要 求。 We are glad to inform you that the goods you ordered are ready for shipment. Please let us have your instructions for packing and shipment.

大工14春《外贸函电》在线作业123答案

大工14春《外贸函电》在 线作业123答案 -标准化文件发布号:(9456-EUATWK-MWUB-WUNN-INNUL-DDQTY-KII

大工14春《外贸函电》在线作业1 单选题判断题 一、单选题(共 15 道试题,共 90 分。) 1. Which of the following means "价目表" A. price list B. sample C. enquiry D. request -----------------选择:A 2. We look forward to _______ your catalogues and samples for quality tea and coffee sets. A. receive B. received C. being received D. receiving -----------------选择:D 3. What does "personnel manager" mean in Chinese? A. 销售经理 B. 运营主管 C. 人事经理 D. 财务经理 -----------------选择:C 4. We are pleased to inform you that we have ________ our business of sales department. A. risen B. raised C. enlarged D. added -----------------选择:C 5. _______ please find the catalogues and latest price list. A. Enclosed B. Enclosing C. Enclose D. Enclosure -----------------选择:A 6. Which of the following means "称呼语" A. letterhead B. salutation C. enclosure

北语20春《外贸英语函电》作业1.doc

1.We are( ) in the import and export of chemicals. A.interesting B.interest C.of interest D.interested 【参考答案】: D 2.While we appreciate your order, ( ) we very much regret that we are unable to accept any fresh orders at present owing to heavy commitments. A.and B.but C.therefore D.nor 【参考答案】: B 3.We regret the need for you to write to us and hope the steps we are taking( ) the safe arrival of all your orders in future. A.ensure B.assure C.insure D.sure 【参考答案】: A 4.The good you enquire for are ( ) now A.Out B.Not stock C.Out stock D.Out of stock 【参考答案】: D 5.We shall( ) you again, as soon as we resume offering. A.contact with B.contact to C.contact D.contact by 【参考答案】: C 6.We cannot see any possibility of business( ) your price is too high.

外贸函电网上作业

题号:1 题型:单选题(请在以下几个选项中选择唯一正确答案)本题分数:5 内容: We are looking forward with interest _______ hearing from you. A、with B、on C、by D、to 标准答案:D 学员答案:D 本题得分:5 题号:2 题型:单选题(请在以下几个选项中选择唯一正确答案)本题分数:5 内容: We are pleased to have your enquiry _______ our products. A、for B、of C、with D、in 标准答案:A 学员答案:A 本题得分:5 题号:3 题型:单选题(请在以下几个选项中选择唯一正确答案)本题分数:5 内容: We have extensive connections _______food stores in cities and towns. A、for B、with C、of D、to 标准答案:B 学员答案:B 本题得分:5 题号:4 题型:单选题(请在以下几个选项中选择唯一正确答案)本题分数:5 内容: _____ your prices are right, you will find a ready market for the products. A、Should B、To provide C、Provided D、Provide

标准答案:C 学员答案:C 本题得分:5 题号:5 题型:单选题(请在以下几个选项中选择唯一正确答案)本题分数:5内容: We are airmailing to you, ______ separate cover, a copy of our catalogue. A、with B、on C、under D、for 标准答案:C 学员答案:C 本题得分:5 题号:6 题型:单选题(请在以下几个选项中选择唯一正确答案)本题分数:5内容: They buy these goods ______ quantities. A、on B、to C、to D、in 标准答案:D 学员答案:D 本题得分:5 题号:7 题型:单选题(请在以下几个选项中选择唯一正确答案)本题分数:5内容: We are making you our quotation for shoes A、as follows B、as following C、as follow D、following 标准答案:A 学员答案:A 本题得分:5 题号:8 题型:单选题(请在以下几个选项中选择唯一正确答案)本题分数:5内容: If the first shipment proves ______, we shall place a repeat order. A、to be satisfactory

作业51

题组层级快练(五十一) 1.(2018·广东清远一中月考)已知直线l⊥平面α,直线m?平面β,给出下列命题:①α⊥β?l∥m;②α∥β?l⊥m;③l⊥m?α∥β;④l∥m?α⊥β,其中正确命题的序号是() A.①②③B.②③④ C.①③D.②④ 答案 D 解析①中l与m可能相交、平行或异面;②中结论正确;③中两平面α,β可能平行,也可能相交;④中结论正确. 2.设a,b,c是三条不同的直线,α,β是两个不同的平面,则a⊥b的一个充分不必要条件是() A.a⊥c,b⊥c B.α⊥β,a?α,b?β C.a⊥α,b∥αD.a⊥α,b⊥α 答案 C 解析对于C,在平面α内存在c∥b,因为a⊥α,所以a⊥c,故a⊥b;A,B中,直线a,b可能是平行直线,相交直线,也可能是异面直线;D中一定推出a∥b. 3.(2018·江西南昌模拟)如图,在四面体ABCD中,已知AB⊥AC,BD⊥AC,那么D在平面ABC内的射影H必在() A.直线AB上B.直线BC上 C.直线AC上D.△ABC内部 答案 A 解析由AB⊥AC,BD⊥AC,又AB∩BD=B,则AC⊥平面ABD,而AC?平面ABC,则平面ABC⊥平面ABD,因此D在平面ABC内的射影H必在平面ABC与平面ABD的交线AB上,故选A. 4.设a,b是夹角为30°的异面直线,则满足条件“a?α,b?β,且α⊥β”的平面α,β() A.不存在B.有且只有一对 C.有且只有两对D.有无数对 答案 D 解析过直线a的平面α有无数个,当平面α与直线b平行时,两直线的公垂线与b确定的

平面β与α垂直,当平面α与b相交时,过交点作平面α的垂线,此垂线与b确定的平面β与α垂直.故选D. 5.(2018·保定模拟)如图,在正四面体P-ABC中,D,E,F分别是AB, BC,CA的中点,下面四个结论不成立的是() A.BC∥平面PDF B.DF⊥平面PAE C.平面PDF⊥平面PAE D.平面PDE⊥平面ABC 答案 D 解析因BC∥DF,DF?平面PDF,BC?平面PDF,所以BC∥平面PDF,A成立;易证BC⊥平面PAE,BC∥DF,所以结论B,C均成立;点P在底面ABC内的射影为△ABC的中心,不在中位线DE上,故结论D不成立. 6.已知直线PA垂直于以AB为直径的圆所在的平面,C为圆上异于A,B的 任一点,则下列关系中不正确的是() A.PA⊥BC B.BC⊥平面PAC C.AC⊥PB D.PC⊥BC 答案 C 解析AB为直径,C为圆上异于A,B的一点,所以AC⊥BC.因为PA⊥平面ABC,所以PA⊥BC.因为PA∩AC=A,所以BC⊥平面PAC,从而PC⊥BC.故选C. 7.如图,在三棱锥D-ABC中,若AB=CB,AD=CD,E是AC的中点, 则下列命题中正确的是() A.平面ABC⊥平面ABD B.平面ABD⊥平面BCD C.平面ABC⊥平面BDE,且平面ACD⊥平面BDE D.平面ABC⊥平面ACD,且平面ACD⊥平面BDE 答案 C 解析因为AB=CB,且E是AC的中点,所以BE⊥AC,同理,DE⊥AC,由于DE∩BE =E,于是AC⊥平面BDE.因为AC?平面ABC,所以平面ABC⊥平面BDE.又AC?平面ACD,所以平面ACD⊥平面BDE.故选C. 8.(2017·沧州七校联考)如图所示,已知六棱锥P-ABCDEF的底面是正 六边形,PA⊥平面ABC.则下列结论不正确的是() A.CD∥平面PAF B.DF⊥平面PAF C.CF∥平面PAB D.CF⊥平面PAD 答案 D

北语18秋外贸英语函电作业2

(单选题) 1: Please( ) us posted( ) the developments of your market. A: keep, by B: let, of C: keep, of D: let, by 正确答案: (单选题) 2: We wish to receive your shipping advice soon for the goods under the captioned ( ). A: letter B: cable C: contract D: communication 正确答案: (单选题) 3: We hope to receive your quotation with details ( ) the earliest date of shipment. A: including B: to be included C: being included D: include 正确答案: (单选题) 4: We offer you our lowest price, ( ) we have done a lot of business with other customers. A: which B: that C: with which D: at which 正确答案: (单选题) 5: We are establishing the relative L/C with the Bank of China, Shanghai and shall let you know by cable ( ) it is opened A: until B: before C: unless D: as soon as 正确答案: (单选题) 6: In ( ) of quality, our make is superior. A: terms B: term C: connection D: connections 正确答案: (单选题) 7: Our corporation handles exclusively the import and export business of light industrial ( ). A: products B: goods

MCS-51微机接口大作业

《微机接口技术》 大作业 作业要求: 设计一外部设备监控系统,采用CPU为51系列单片机,用C51或ASM51编写软件,给出SCH原理图和软件清单(要求有功能注释),系统要求如下: ①系统带有电子时钟,2路模拟量和8路数字量的检测; ②4个按键,分别为设置、+、-、->可以可以完成相应的设置过程(包括时间设置和外部监控值的上下限设置); ③采用I2C 8583时钟芯片(可以查相关资料); ④8个8段LED显示(可以采用SPI总线芯片7219)以辅助完成设置,显示内容:时-分-秒;

⑤8个按键分别可以模拟外部8个故障点; ⑥2路电位器可以模拟外部模拟信号; ⑦EEPROM(I2C总线芯片24c256)保存最近100个外部故障数据(包含故障点和故障时间); ⑧RS485上位机接口。 系统软件完成的功能: ①上电时电子钟方式显示当前时间; ②设置按键进入设置状态,可以重新设置新时间值和外部监控值的上下限,结果写入8583。设置完成后电子钟方式显示当前时间; ③实时监测外部8个数字故障点和模拟数字,一旦故障记录其故障数据、故障发生时间和恢复时间; ④上位机传来命令字0xaa向上位机发送所保存的外部故障数据,发送完成后清除保存数据。(自定义通讯协议)。

一、元器件选择 芯片名称型号接口类型线数其它AD转换芯片TLC1549 SPI 3 2块共阴极数码管显示驱动器MAX7219 SPI 3 时钟芯片PCF8583 I2C 2 EPROM 24WC256 I2C 2 串口RS485 MAX487E 3 二、MCS-51单片机引脚连接 单片机I/O 引脚 外部器件连接及功用 器件名称引脚代号功用 P0^0 SW1 按钮1,模拟外部故障点1 P0^1 SW2 按钮2,模拟外部故障点2 P0^2 SW3 按钮3,模拟外部故障点3 P0^3 SW4 按钮4,模拟外部故障点4 P0^4 SW5 按钮5,模拟外部故障点5 P0^5 SW6 按钮6,模拟外部故障点6 P0^6 SW7 按钮7,模拟外部故障点7 P0^7 SW8 按钮8,模拟外部故障点8 P1^0 MAX7219 DIN 数码管显示串行数据输入端 P1^1 MAX7219 LOAD 数码管显示数据锁存端 P1^2 MAX7219 CLK 数码管显示时钟输入端 P1^3 --- --- --- P1^4 SPI/TLC1549 CS 模拟SPI片选信号 P1^5 SP I/TLC1549 DA TA OUT 模拟SPI数据传送位 P1^6 SP I/TLC1549 CLK 模拟SPI时钟控制位 P1^7 --- --- --- P2^0 --- --- --- P2^1 SW9 按钮9,系统参数“设置”键 P2^2 SW10 按钮10,系统参数增加“+”键 P2^3 SW11 按钮11,系统参数减小“-”键 P2^4 SW12 按钮12,系统参数项目选择“->”键P2^5 --- --- --- P2^6 MAX487E DE 485串口通信 P2^7 MAX487E RE 485串口通信 P3^0/RXD MAX487E RXD 485串口通信 P3^1/TXD MAX487E TXD 485串口通信 P3^2/INT0 PCF8583 INT P3^3/INT1 --- --- --- P3^4/T0 --- --- --- P3^5/T1 --- --- --- P3^6/WR I2C总线SCL 模拟I2C时钟控制位 P3^7/RD I2C总线SDA 模拟I2C数据传送位

大工20秋《外贸函电》在线作业2答案

大工20秋《外贸函电》在线作业2 试卷总分:100 得分:100 一、单选题 (共 15 道试题,共 90 分) 1.Our company has 30 years’ experience _____ the machinery line. A.on B.in C.about D.of 【正确答案】:B 2.We are anxious to _____ the market for our Antimony Trioxide, which at present enjoys a limited sale in Europe. A.decrease https://www.360docs.net/doc/50178371.html,rge C.expand D.extent 【正确答案】:C 3.Your terms of payment are ______ to us. A.agree B.agring C.agreement D.agreeable 【正确答案】:D 4.The shipment time is June or July at our ____ and the goods will be shipped in one _____. A.choose, ship B.option, lot C.decide, cargo D.opt, consignment 【正确答案】:B 5.We regret to report that a consignment of silk piece goods ____ Order No. 567 has not been delivered. A.with B.for C.on D.under 【正确答案】:D 6.While ______ an enquiry, you ought to enquire into quality, specification and price etc..

北语20秋《外贸英语函电》作业1【标准答案】

(单选题)1: Please effect insurance ( ) the cargo for RMB 12,000, by s. S. Feng hua, from shanghai to New York. A: by B: at C: with D: on 正确答案: D (单选题)2: We trust that you will find our goods( ) A: attracting B: to be attractive C: attract your attention D: attractive 正确答案: D (单选题)3: We are willing to renew the agreement on the same terms ( ) last. A: like B: as C: with D: to 正确答案: B (单选题)4: The ship is scheduled to sail ( ) Hong Kong on the 23rd of this month. A: to B: for C: in D: by 正确答案: B (单选题)5: An English business letter should be concise. The phrase" few and far between" should be replaced by ( ) A: Seldom B: Before C: About D: If 正确答案: A (单选题)6: We would ask you to do everything possible ( ) punctual shipment. A: ensuring B: to be ensured C: to ensure D: while ensuring 正确答案: C

MCS51单片机作业解答

MCS51单片机作业解答 第二章 MCS-51单片机的结构和原理 (1) MCS-51单片机芯片包含哪些主要功能部件? 答:CPU、4KBROM、128B RAM、4个8位I/O口、2个定时计数器、串行I/O口、中断系统、时钟电路、位处理器、总线结构。 (2)MCS-51单片机的 /EA端有何用途? 答:当/EA =0 只访问片外程序区;当/EA=1时,先访问片内程序区,当PC超过片内程序容量时,自动转向外部程序区。 (3)MCS-51单片机有哪些信号需要芯片引脚以第二功能的方式提供? 答:RXD、TXD、/INT0、/INT1、T0、T1、/WR、/RD (4)MCS-51单片机的4个I/O口在使用上各有什么功能和特点? 答:P1口通用输入输出;P0口数据总线、地址总线低8位、通用输入输出 P2口地址总线高8位、通用输入输出 P3第2功能信号、通用输入输出。 (5)单片机的存储器分哪几个空间? 试述各空间的作用。 答:程序存储器:内部ROM、外部ROM 数据存储器:内部基本RAM、专用寄存器区、外部RAM (6)简述片内RAM中包含哪些可位寻址单元? 答:20H~2FH共16个可寻址单元 (7)什么叫堆栈? 堆栈指针SP的作用是什么? 在程序设计中为何要对SP重新赋值? 答:只允许数据单端输入输出的一段存储空间。 SP的作用是用来存放堆栈栈顶的地址。 因为SP的初值是07H,后继的是寄存器区和位寻址区,为了便于编程工作,要修改SP. (8)程序状态字寄存器PSW 的作用是什么?简述各位的作用。 答:PSW用来存放程序执行状态的信息, CY—加减运算的进位、借位 AC—辅助进位标志,加减运算的低4位进位、借位 (9)位地址65H 与字节地址65H 如何区别? 位地址65H具体在片内RAM中什么位置? 答:位地址65H中是一位0/1的数据,字节地址65H是8位0/1的数据。 位地址65H在片内RAM中2CH单元第5位。 (10)什么是振荡周期、时钟周期、机器周期和指令周期? 如何计算机器周期的确切时间? 答:振荡周期——为单片机提供信号的振荡源的周期 时钟周期——振荡脉冲2分频的信号 机器周期——完成一个基本操作需要的时间,是振荡周期/12=1T 指令周期——执行1条指令需要的时间 1~4T (11)单片机工作时在运行出错或进入死循环时,如何处理? 答:复位处理,在单片机的RESET加持续1段时间的高电平 (12)使单片机复位的方法有几种?复位后单片机的初始状态如何?

《外贸函电》课程教学大纲

《外贸函电》课程教学大纲 二、课程内容及基本要求 《外贸函电》是一门专业选修课程,在教学中应对各类外贸函电的写作技巧和方法、专业词语、语言形式等进行详尽的课堂讲授,辅以多媒体文档展示软件制作的“板书”,突出该课程的教学思路和每章的重点。在课堂讲授中,除教材上的例信和练习外,补充必要的阅读资料及写作练习,以辅助达到本课程的教学目的。该课程要求学生完成大量的课堂及课下练习,如修改病句、翻译句子和段落、按要求书写信件等,以帮助学生掌握每章的语言点和写作要领,加强实践运用的能力。并且通过对各项练习:采用课堂分析和集体讨论的方式,启发学生思考,进一步强化 第一章写信格式和原则(4学时) 一、学习目的和要求 了解函电写作的要领,掌握函电写作的内容 二、课程内容

书写外贸函电的七项原则、商业信件的格式(2学时)和商业信件的各 组成部分及信封的书写格式(2学时)。 三、课下作业: 将一封各部分顺序打乱的信件重新排列 本章重点:外贸函电的七项原则 本章难点:外贸函电的七项原则 第二章询价信ENQUIRIES(3学时) 一、学习目的和要求 介绍什么是询价,书写询价信的一般要求 二、课程内容 讲解书中的例信,重点解释其中的专业术语、专门词组和一些常见词的商业用法。 自学部分:方式与结构(STYLE AND STRUCTURE):商业信件如何开头和结尾 三、课下作业: 选择、修改句子 本章重点:询价信的一般要求 本章难点:询价信的专业术语、专门词组 第三章询价复信(ENQUIRIES REPLIES):(3学时) 一、学习目的和要求 回复询盘 二、课程内容 寄样本,答复询盘 三、课下作业 按要求写信或翻译信件 本章重点:答复询盘 本章难点:答复询盘专业术语和词组 第四章报价(OFFERS )(3学时) 一、学习目的和要求 什么是报价,书写报价信的一般要求。实盘和虚盘 二、课程内容 实盘和虚盘、推销信的特点和写法。讲解书中的例信。如何做到句子表达多样化和句子流畅三、课下作业 选择、修改句子、汉译英句子按要求写信或翻译信件 本章重点:实盘和虚盘 本章难点:实盘和虚盘、推销信的特点和写法 第五章形式发票(2学时) 一、学习目的和要求 如何写作有关寄送形式发票 二、课程内容 寄送形式发票 三、课下作业

外贸函电作业答案

外贸函电作业答案 作业一: I. Put the following Chinese into English: contract enclosure establishing trade relations agency interest II. Multiple choice: 1. b 2. d 3. a 4. b 5. b 6.a 7. c 8. a 9. c 10. d III. Put the following sentences into English: 1. We have come to know/have learnt from the Chamber of Commerce that you are in the market for a large quantity of Black Tea. 2. We shall be glad / appreciated to receive your latest catalogue. 3. Please quote us your lowest price for 100metric tons of Rice CIF Guangzhou, stating the earliest date of shipment . 4. We are confident that we could place large orders with you if your prices are competitive. 5. We shall be glad / appreciated to receive your latest catalogue. V. Read the following short passages or letters and then translate them into English: Dear Sirs, Having obtained your name and address from the Internet , we learn that you are handling the import and export of Toys. We are writing you in the hope of establishing business relations with you. It will be highly/greatly appreciated if you will send us your catalogues and pricelists/quotations. If prices are in line/resonable and time of shipment is acceptable, we trust/convince important(large)business/a great deal will/can be closed/concluded.或We will place large orders with you . yours truly 作业二: I. Put the following Chinese into English: Order quote fax electronic business catalogue II. Multiple choice:

51作业

1微机基本概念 1.1什么是单片机?与通用微机相比,具有哪些特点? 1.2在各种系列的单片机中,片内ROM的配置有几种形式?用户应根据什么原则来选用? 2MCS-51系列单片机概述 2.18051单片机片内包含哪些主要组成部分? 2.2PC是什么寄存器?有何作用?是否属于SFR? 2.3DPTR是什么寄存器?有何作用?是否属于SFR? 2.4MCS-51系列单片机有哪几个并行I/O口?各有什么特性? 2.5MCS-51系列单片机的时钟周期、机器周期、指令周期是如何分配的?当晶振频率为6MHz 时,一个机器周期为多少us? 2.6ALE信号有何功用?一般情况下它与机器周期的关系如何?在什么条件下ALE信号可用 作外部设备的定时信号? 2.7有哪几种方法能使单片机复位?复位后各寄存器和RAM的影响如何? 3指令系统和汇编语言程序设计 3.1MCS-51系列单片机存储器的组织结构是怎样的?片内数据存储器分为哪几个性质和用途 不同的区域? 3.2EA/V PP引脚有何功用?8031的EA引脚应如何处理?为什么? 3.3MCS-51系列单片机如何确定和改变当前工作寄存器? 3.4MCS-51系列单片机指令系统有哪几种寻址方式?举例说明。 3.5访问片内RAM和片外RAM,各应采用哪些寻址方式? 3.6MCS-51系列单片机指令系统包含哪几大类指令?各有何用处? 3.7请用数据传送指令来实现下列要求的数据传送 1)R0的内容传送到R1中 2)片内RAM 20H单元的内容传送到A中 3)片外RAM 30H单元的内容传送到R0中 4)片外RAM 30H单元的内容传送到片内RAM 20H单元中 5)片外RAM 1000H单元的内容传送到片内RAM 20H单元中 6)ROM 2000H单元的内容传送到R1中 7)ROM 2000H单元的内容传送到片内RAM 20H单元中 8)ROM 2000H单元的内容传送到片外RAM 30H单元中 9)ROM 2000H单元的内容传送到片外RAM 1000H单元中 3.8设(A)=0FH,(R0)=30H,片内RAM (30H)=0AH、(31H)=0BH、(32H)=0CH,执行下列程序 后各单元内容如何变化? MOV A,@R0 MOV @R0,32H MOV 32H,A MOV R0,#31H MOV A,@R0 3.9设片内RAM (30H)=5AH,(5AH)=40H,(40H)=00H,并口(P1)=7FH,执行下列程序后R0、 R1、A、B、P1、片内RAM 40H、30H、5AH单元的内容如何? MOV R0,#30H MOV A,@R0 1

大工14春《外贸函电》在线作业123答案

大工14春《外贸函电》在线作业1 单选题判断题 一、单选题(共 15 道试题,共 90 分。) 1. Which of the following means "价目表"? A. price list B. sample C. enquiry D. request -----------------选择:A 2. We look forward to _______ your catalogues and samples for quality tea and coffee sets. A. receive B. received C. being received D. receiving -----------------选择:D 3. What does "personnel manager" mean in Chinese? A. 销售经理 B. 运营主管 C. 人事经理 D. 财务经理 -----------------选择:C 4. We are pleased to inform you that we have ________ our business of sales department. A. risen B. raised C. enlarged D. added -----------------选择:C 5. _______ please find the catalogues and latest price list. A. Enclosed B. Enclosing C. Enclose D. Enclosure -----------------选择:A 6. Which of the following means "称呼语"? A. letterhead B. salutation C. enclosure D. signature -----------------选择:B

大工20春《外贸函电》在线作业1答案

(单选题)1: If you could increase the _____ to 10%, we shall be pleased to buy the complete stock. A: spend B: take C: discount D: name 正确答案: C (单选题)2: We are writing to you ______ establishing business relations. A: hope B: in hope C: in the hope of D: with hope 正确答案: C (单选题)3: We are sure that both of our companies will ____ from the joint venture. A: makes benefit B: benefit C: benefited D: mutual benefits 正确答案: B (单选题)4: We can grant you a _____ discount of 5% on repeat orders. A: specially B: especially C: particularly D: special 正确答案: D (单选题)5: The more _____ you classroom is, the more active your students are. A: interester B: interesting C: interested D: interestest 正确答案: B (单选题)6: We trust that you will find our goods_____. A: attract B: to attractive C: attract your attentions D: attractive 正确答案: D (单选题)7: We would ____ very much if you send us some samples immediately.

[北语]20春《外贸英语函电》作业1

20春《外贸英语函电》作业1 一、单选题 1.We are in the import and export of chemicals. A.of interest B.interesting C.interested D.interest 正确答案:C 2.While we appreciate your order, we very much regret that we are unable to accept any fresh orders at present owing to heavy commitments. A.therefore B.nor C.but D.and 正确答案:C 3.We regret the need for you to write to us and hope the steps we are taking the safe arrival of all your orders in future. A.sure B.insure C.ensure D.assure 正确答案:C 4.The good you enquire for are now A.Out stock B.Out of stock C.Out D.Not stock 正确答案:B 5.We shall you again, as soon as we resume offering. A.contact with B.contact to C.contact by D.contact 正确答案:D 6.We cannot see any possibility of business your price is too high. A.while B.thought C.that D.since 正确答案:D 7.We are establishing the relative L/C with the Bank of China, Shanghai and shall let you know by cable it is opened.

相关文档
最新文档