高中英语听力综合训练20PDF
每天一套高中英语听力专项训练(20)(录音+原文+答案)

浅谈综采工作面设备防滑技术发表时间:2017-07-13T10:54:13.527Z 来源:《建筑学研究前沿》2017年3月下作者:雷子龙[导读] 液压支架与底板的摩擦因数一般为0.35~0.4,相应的摩擦角为18°~20°。
神华宁夏煤业集团石槽村煤矿宁夏银川 751400摘要:石槽村煤矿1102206综采工作面煤煤层倾角大、淋水大,造成工作面设备下滑,严重影响了工作面安全生产,文章以支架受力分析出发探讨了设备下滑的原因,研究了伪倾斜开采及留设防滑平台等防滑措施在1102206综采工作面的应用。
关键词:1102206;综采工作面;液压支架;刮板输送机;防滑防倒1引言1102206综采面为2-2煤工作面,工作面位于石槽村井田中部偏南,煤层平均厚度3.43 m,倾角25°;工作面正常涌水量337m3/h,最大涌水量416m3/h。
采用单一走向长壁全部垮落采煤法开采。
液压支架与底板的摩擦因数一般为0.35~0.4,相应的摩擦角为18°~20°,由于工作面淋水大加之降尘洒水,使摩擦因数降低,致使煤层倾角在12°时设备就会出现下滑趋势。
1102206综采工作面平均倾角25°,有效控制工作面设备下滑便成为安全生产的关键。
2工作面支架受力分析2.1支架支撑状态受力分析支架在支撑状态受自重G、顶板压力M与顶底板的摩擦力F1、F2和底板的支撑力N1。
支架的受力分析如图(2.1)所示。
3工作面设备下滑的原因“大倾角”工作面开采需要解决的关键问题是如何控制支架与运输机下滑和支架的失稳。
液压支架和输送机的防滑防倒既是重点也是难点,更是保证生产的前提。
3.1输送机下滑的原因(1)由以上受力分析得出工作面倾角小于21°时设备不会出现下滑,但由于工作面淋水大会使这个临界角度减小,1102206综采工作面平均倾角25°,在推移输送机时更会引起设备下滑。
高考英语听力综合听力练习题20题含答案解析

高考英语听力综合听力练习题20题含答案解析1. Where does the conversation probably take place?A. In a library.B. In a classroom.C. In a bookstore.答案解析:B。
听力材料中提到了“blackboard”“students”等与教室相关的词汇,所以可以判断对话发生在教室。
A 选项图书馆通常会有“books”“librarian”等词汇;C 选项书店会有“books”“shelves”等词汇。
2. What will the man do this weekend?A. Go hiking.B. Visit his grandparents.C. Stay at home.答案解析:A。
听力材料中男人说“I plan to go hiking this weekend.”表明他周末要去徒步。
B 选项中提到的看望祖父母在听力材料中未出现;C 选项待在家里也与听力材料不符。
3. What's the woman's problem?A. She lost her key.B. She can't find her book.C. She missed the bus.答案解析:B。
听力材料中女人说“I can't find my book.”表明她找不到书了。
A 选项丢钥匙在听力材料中未提及;C 选项错过公交车也未在听力材料中出现。
4. What does the man suggest doing?A. Watching a movie.B. Going to a concert.C. Having a picnic.答案解析:C。
听力材料中男人说“How about having a picnic?”表明他建议去野餐。
A 选项看电影和B 选项去听音乐会在听力材料中未被提及。
人教部编版高中英语听力专项训练(录音材料原文及答案)

人教部编版高中英语听力专项训练(录音材料原文及答案)1.What does the man mean?A.He wants to have a rest.B.The woman should have a rest.C.He would like to live beside the woman.2.What does the girl herself want to learn in college?A.Economics.B.Science.C.Politics.3.Where is the post office?A.Near the third traffic light ahead.B.At the corner.C.On the right of the first traffic light.4.Where do you think the dialogue takes place?A.In the post office.B.In a hotel.C.In a shop.5.How will the man go to the conference?A.By air.B.By bus.C.By train.第二节(共15小题;每小题1.5分,满分22.5分)听下面5段对话或独白。
每段对话或独白后有几个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置。
听每段对话或独白前,你将有时间阅读各个小题,每小题5秒钟;听完后,各小题将给出5秒钟的作答时间。
每段对话或独白读两遍。
听第6段材料,回答第6至7题。
6.What does the woman think of the bread?A.It’s delicious.B.It’s hard.C.It’s soft.7.What does the man think the woman should do?A.Throw it away.B.Have it for breakfast.C.Get her money back.听第7段材料,回答8至10题。
高中英语听力强化训练 Test 20英语听力

高中英语听力强化训练 Test 20听力文件无病毒,请放心打开听力理解第一节(共5小题;每小题1.5分,满分7.5分)听下面5段对话,每段对话后有一个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置。
听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题。
每段对话仅读一遍。
1. How much did each dinner cost?A. $ 16.B. $ 8.C. $ 32.2. What does the woman want to know?A. Where Sally lost her money last week.B. What Sally had done to break her arm.C. How Sally was feeling.3. Which dress did the woman wear?A. The prettier one.B. The new one.C. The more comfortable one.4. Who is the woman?A. Ann Robinson.B. Ann Robinson’s sister.C. Ann Robinson’s friend.5. What will happen if the man does shopping?A. The woman will cook.B. He will dine out.C. He will have to buy some food for the dinner.第二节(共15小题;每小题1.5分,满分22.5分)听下面5段对话或独白。
每段对话或独白后有几个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置。
听每段对话或独白前,你将有时间阅读各个小题,每个小题5秒钟;听完后,各小题将给出5秒钟的作答时间。
每段对话或独白读两遍。
人教版高考英语听力综合听力练习题20题含答案解析

人教版高考英语听力综合听力练习题20题含答案解析1. Where does the conversation probably take place?A. In a library.B. In a bookstore.C. In a classroom.答案解析:B。
选项A“In a library”图书馆通常比较安静,对话中没有提及与图书馆相关的信息。
选项C“In a classroom”教室一般有桌椅和教学设备等,也不符合对话场景。
而对话中可能提到了书的价格、种类等信息,更符合在书店的场景。
2. What will the man do next?A. Go to a meeting.B. Have lunch.C. See a doctor.答案解析:A。
选项B“Have lunch”对话中未提及吃饭相关内容。
选项C“See a doctor”没有任何线索表明要去看医生。
对话中可能提到了时间紧迫,要去参加会议,所以选A。
3. What does the woman want to do?A. Buy a dress.B. Rent a car.C. Book a hotel room.答案解析:A。
选项B“Rent a car”对话中没有关于租车的信息。
选项C“Book a hotel room”也没有提及订酒店房间。
对话中可能提到了衣服的颜色、款式等,表明女人想买一件裙子。
4. What is the man's problem?A. He lost his keys.B. He missed the bus.C. He forgot his homework.答案解析:A。
选项B“He missed the bus”对话中未出现与公交车相关内容。
选项C“He forgot his homework”没有提到作业的事情。
对话中可能提到在找东西,最后确定是钥匙丢了。
5. Where are the speakers?A. At a park.B. At a zoo.C. At a museum.答案解析:B。
高中英语听力练习题(附参考答案)

高中英语听力练习题(附参考答案)一、听力第一节1.How is the woman going to the airport?A。
By taxi。
B。
By bus。
C。
By train.2.What is the nship een the speakers?A。
___ wife.3.What does the girl want to do?A。
She wants to keep the disks for another week。
B。
She will borrow the disks next week。
C。
She will have to return them ___.4.What can we learn from the n?A。
___’t want to see him.5.What does the man want to do?A。
He asks the woman to take care of his daughter。
B。
He wants to ask for leave。
C。
He wants to go to visit her.第二节6.What does the man suggest doing?A。
___.7.What does the woman think of the idea?A。
She thinks it’s a good idea。
B。
She thinks it’s a bad idea。
C。
She’s not sure.8.What’s the man’s problem?A。
He’s lost his phone。
B。
He can’t find his keys。
C。
He’s otten his passw ord.9.What does the woman offer to do?A。
Help the man look for his phone。
高考英语听力综合听力练习题20题(答案解析)

高考英语听力综合听力练习题20题(答案解析)1. Where are the speakers?A. In a library.B. In a classroom.C. In a bookstore.答案解析:C。
听力材料中提到了“books”“prices”等与书店相关的词汇,所以可以判断出说话者在书店。
A 选项图书馆在听力材料中未提及相关内容;B 选项教室也没有对应的线索。
本题考查对听力材料中关键词的把握,高考常考通过关键词判断场景。
2. What will the man do next?A. Go to a meeting.B. See a doctor.C. Have lunch.答案解析:A。
听力材料中提到“He has a meeting to attend soon.”说明男人接下来要去开会。
B 选项看医生在听力材料中没有依据;C 选项吃午饭也未被提及。
本题考查对听力材料中具体行动的理解,高考常考根据对话内容判断人物下一步行动。
3. What does the woman want to buy?A. A dress.B. A skirt.C. A pair of shoes.答案解析:B。
听力材料中女人明确说“I want to buy a skirt.”所以答案是B。
A 选项连衣裙和C 选项鞋子在听力材料中未被提到。
本题考查对听力材料中具体物品的捕捉,高考常考根据对话确定所需物品。
4. Who is the woman talking to?A. Her teacher.B. Her classmate.C. Her friend.答案解析:A。
听力材料中有“teacher”“assignment”等词汇,可以判断女人在和老师说话。
B 选项同学和C 选项朋友在听力材料中没有相关线索。
本题考查通过关键词判断对话对象,高考常考对人物关系的判断。
5. What time is it now?A. 8:30.B. 9:00.C. 9:30.答案解析:B。
高考英语听力综合听力练习题20题(带答案)

高考英语听力综合听力练习题20题(带答案)1. You will hear a conversation between two people. They are talking about a party. How many people are expected to come to the party?A. 20B. 30C. 40答案:A。
解析:对话中明确提到预计有20人来参加派对。
2. Listen to the dialogue. The two speakers are in a family. What is the relationship between them?A. Father and daughterB. Mother and sonC. Brother and sister答案:C。
解析:从对话中的用词和互动方式可以判断出他们是兄妹关系。
3. A conversation takes place in a school. What did the boy do first this morning?A. He had breakfastB. He attended a classC. He did some exercise答案:C。
解析:根据对话内容可知男孩今天早上先做了运动。
4. In this dialogue, two people are discussing a cultural event. When will the event start?A. At 7:00 p.m.B. At 8:00 p.m.C. At 9:00 p.m.答案:B。
解析:对话中提到活动将在晚上8点开始。
5. Listen carefully. Two friends are talking about their study plan. How many hours does the girl plan to study every day?A. 3B. 4C. 5答案:A。