【判断题】
使用中的氧气瓶与乙炔气瓶应垂直放置并固定起来，氧气瓶与乙炔气瓶的距离不得小于5m。
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相关试题
【判断题】
氧气瓶、乙炔气瓶的瓶阀冻结时严禁用工具敲打，可用温火慢慢烘烤。
【判断题】
动火作业间断或终结后，应清理现场，方可离开。
【判断题】
铁塔、构架、避雷针、避雷线安装结束后立即接地。
【判断题】
在高海拔地区进行高处作业时，作业人员应随身携带小型氧气瓶或袋，高处作业时间不应超过2h。
【判断题】
禁止作业人员利用起重机吊钩上升或下降。禁止用起重机械载运人员。
【判断题】
绞磨和卷扬机应放置平稳，锚固应可靠，并应有防滑动措施。受力前方不得有人。
【判断题】
施工机械作业过程中，操作人员应严格遵循使用说明书规定的操作要求，禁止违章作业，不得擅自离开工作岗位或将机械交给其他人员操作。
【判断题】
插接的环绳或绳套，其插接长度应不小于钢丝绳直径的15倍，且不得小于200mm。
【判断题】
卸扣不得处于吊件的转角处，不得横向受力。
【判断题】
使用链条葫芦和手扳葫芦，带负荷停留较长时间或过夜时，应采用手拉链或扳手绑扎在吊钩上，并采取保险措施。
【判断题】
拆卸钢管及更换模具时，操作人员不得戴手套，以防卷入磨具内。
【判断题】
安全工器具应设专人管理；收发应严格履行验收手续，并按照相关规定和使用说明书检查、使用、试验、存放和报废。
【判断题】
安全工器具超过有效使用期限，不能达到有效防护功能指标的，即予以报废。
【判断题】
任何人员进入生产、施工现场均应对佩戴安全帽。
【判断题】
安全绳连接器表面光滑，无裂纹、褶皱，边缘圆滑无毛刺，无永久性变形和活门失效等现象。
【判断题】
个人保安线作为预防感应电使用，特殊情况下可以代替工作接地线。
【判断题】
使用抽拉式电容型验电器时，绝缘杆应根据操作距离适当拉开。
【判断题】
移动梯子时，梯子上的工作人员应抓稳抓牢。
【判断题】
开挖基坑应有可靠的扶梯或坡道，作业人员不得攀登挡土板支撑上下，不得在基坑内休息。
【判断题】
人工开挖基坑，当基坑深度达2m时，宜用取土器械取土，可以用锹直接向坑外抛扔土。
【判断题】
土方挖掘作业坑底面积超过2㎡时，可由两人同时挖掘。
【判断题】
遇六级及以上风、浓雾、雨或雪等天气时应谨慎进行脚手架搭设与拆除作业。
【判断题】
竹片脚手板的厚度不得小于50mm，螺栓孔不得大于10mm，螺栓应拧紧。竹片脚手板的长度以2.2～2.3m、宽度以400mm为宜。
【判断题】
脚手架立杆垫板或底座底面标高应高于自然地坪30～lOOmm，确保立杆底部不积水。
【判断题】
脚手架搭设时，立杆接长，顶层顶步可采用搭接，搭接长度不应小于1m，应采用不少于两个扣件固定，端部扣件盖板的边缘至杆端距离不应小于lOOmm。
【判断题】
在高处安装与拆除模板时，作业人员可从模板、支撑上攀登上下，但不得在高处独木或悬吊式模板上行走。
【判断题】
模板拆除应在混凝土达到设计强度后方可进行。
【判断题】
钢筋搬运、堆放应与电力设施保持安全距离，严防碰撞。
【判断题】
混凝土投料高度超过2.5m时，应使用溜槽或串筒。
【判断题】
人工挖孔桩的孔内照明应采用安全矿灯或36V以下带罩防水、防爆灯具且孔内电缆应有防磨损、防潮、防断等保护措施。
【判断题】
墙身砌体高度超过地坪1.5m以上时，应使用脚手架。
【判断题】
在吊顶内作业时，应搭设步道，非上人吊顶不得上人。
【判断题】
人力移动杆段时，应动作协调，滚动前方应有人随时用木楔掩牢。
【判断题】
组立杆塔，吊件螺栓应全部紧固，吊点绳，承托绳、控制绳及内拉线等绑扎处受力部位，不得缺少构件。
【判断题】
调整临时拉线校正杆塔倾斜或弯曲时，塔上进行其他作业的人员应做好安全措施。
【判断题】
索道架设后应在各支架及牵引设备处安装临时接地装置。
【判断题】
用棍、杠撬拨电杆杆段时，应防止其滑脱伤人，用铁撬棍插入预埋孔转动杆段时应注意保护电杆。
【判断题】
钢筋混凝土电杆排杆，作业点周围5m内的易燃易爆物应清除干净。
推荐试题
【单选题】
17. —Oh．I’m hungry．Mum, can I have the hamburger on the plate?
—No．It tastes ．
A. terribly B. terrible C. good D. well
【单选题】
18. —We can invite our teachers to the farewell party next Saturday.
—Yes, ______? I’ll call them at once.
A. what for B. what C. why not D. why
【单选题】
19.You can ________ ask the old man to move away to any other place because he has lived ________ here for at least sixty years．
A. hardly; alone B. hard; alone
C. hardly; lonely D. hardly; lonely
【单选题】
20.—I’m going back to see my grandparents this weekend．
—________．
A. It’s very nice of you B. You’d better hurry
C. Say goodbye to them D. Give my best wishes to them
【单选题】
21.—Why not take ____ umbrella with the sign “Made in China”? It is useful.
—What _______ good advice it is!
A. an; a B. a; a C. an; \ D. \; a
【单选题】
22. —Do you know the boy________ is sitting next to Peter?
— Yes. He is Peter’s friend. They are celebrating his ________ birthday.
A. who; ninth B. that; ninth C. /; ninth D. which; ninth
【单选题】
23. It was dark, ______ I couldnt see what was happening.
A. or B. though C. but D. so
【单选题】
24.—You can use MSN to talk with Vivien on the Internet.
—I know. But can you tell me ________?
A. what I can use it B. when I can use it
C. why can I use it D. how can I use it
【单选题】
25. _______ are you going to the School Uniform Exhibition, Amy ?
To learn about different styles of school uniform.
A. What B. Where C. Which D. Why
【单选题】
( ) 26. Where does the writer of "The little Prince" come from?
A．England． B．France． C．America． D．China．
【单选题】
( ) 27. What does the prince do after the fox tells him a secret?
A．He cares more about a flower and a sheep．
B．He meets many more strange adults on other planets．
C．He realizes his love for the rose and he goes back to his planet．
D．He discovers interesting things such as a snake, other roses and a fox
【单选题】
( ) 28. What does "The little Prince" mainly talk about? It' s about _________．
A．the adult world B．the planet B -612
C．a rose and a fox D．the adventure of a young prince
【单选题】
( ) 29. What is the writer's main purpose（目的）in writing this passage？
A．To tell the readers his life story．
B．To tell people what kind of person his father was．
C．To tell the readers what present he got from his father．
D． To let people know how poor he was．
【单选题】
( ) 30. Why did the father not ask his son not to do this and do that？
A．Because he felt quite confident of his son．
B．Because he was born from a poor family．
C．Because he was a man of few words．
D．Because he didn't want to be much too strict with his son．
【单选题】
( ) 31. What would someone learn from this passage？
A．How to live by oneself． B．How to stand on one's own feet．
C．What a good father should do． D．What the self-important is like．
【单选题】
( ) 32. What may be the proper Chinese for the underlined part in the passage？
A．闲暇时光 B．学费 C．精神空虚 D．经济不足
【单选题】
( ) 33. Why did Natalie Smith pay for the six cars behind her?
A. She had seven tickets.
B. She hoped to please others.
C. She knew the car drivers well.
D. She wanted to show kindness.
【单选题】
( ) 34. Judy Foreman copied down the phrase because she ___ .
A. thought it was beautifully written
B. wanted to know what it really meant
C. decided to write it on a warehouse wall
D. wanted her husband to put it up in the classroom
【单选题】
( ) 35. Who came up with the phrase according to the passage?
A. Judy Foreman. B. Natalie Smith. C. Anne Herbert D. Alice Johnson.
【单选题】
( ) 36. What can we infer from the last paragraph?
A. People should practice random kindness to those in need.
B. People who receive kindness are likely to offer it to others.
C. People should practice random kindness to strangers they meet.
D. People who receive kindness are likely to pay it back to the giver.
【单选题】
( ) 37.The greatest river for navigation is ___________.
A. the Nile B. the Amazon C. the Mekong D. the Mississippi
【单选题】
( ) 38. From a dam, people can use the water for ___________.
A. keeping the rivers clean B. only making electricity
C. irrigation and making electricity D. washing clothes
【单选题】
( ) 39. The water in the river is polluted because of _____________.
A. people's drinking water too much B. people's swimming in the river too much
C. chemicals and other materials D. people's building a dam across a river
【单选题】
( ) 40. The best title of the passage is ___________.
A. Rivers in Cities B. The importance of Rivers
C. Transportation D. Natural Resources
【单选题】
) 1. Even Tony’s six-year-old son asked him ______ smoking.
A. stops B. stopped C. to stop D. stopping
【单选题】
2.—What do you think of the lecture of Li Yang’s Crazy English?
— I think it’s _______ , but someone thinks it’s much too ________.
A. wonderful enough; bored B. enough wonderful; boring
C. enough wonderful; bored D. wonderful enough; boring
【单选题】
3.—He didn’t go to the lecture this morning, did he?
— _____ ．Though he was not feeling very well．
A. No, he didnt B. Yes; he did C. No, he did D. Yes, he didnt
【单选题】
4. If you read a lot, your life ______ full of pleasure.
A. will be B. is C. be D. was
【单选题】
5. The black bag _________ be Annas. She has a blue one.
A. should B. cant C. wouldnt D. could
【单选题】
6. Susan, why are you still here? They are all ready to start.
Im sorry, but I _________ when to start.
A. dont tell B. wasnt told C. didnt tell D. havent told
【单选题】
7.—Why dont you choose the red tie?
—For me, it doesn’t _____ my shirt very well．
A. fix B. accept C. compare D. match
【单选题】
8. — Could you tell me ______? I must find him．
— Sorry．I don’t know．But he was here just now．
A. where Tom was B. where Tom is
C. where has Tom gone D. where can I find Tom
【单选题】
9. —What did Mr Green say to you?
— What a heavy rain! How did you come here? He asked________.
A. at all B. in fact C. in surprise D. as a result
【单选题】
10. I often see Tom on the playground．When I passed the playground yesterday, I saw him ．
A. play; playing B. to play; play C. playing; to play D. playing; play
【单选题】
11. — Mum, could I have ____________ to drink?
— Oh, dear．You can only drink some water．There is _________ in the kitchen．
A. anything; else something B. anything; something else
C. something; else nothing D. something; nothing else
【单选题】
12. We all know that learning a foreign language _______ time and effort.
A. requires B. reduces C. removes D. repeats
【单选题】
13. Her son __________ Coke, but now he __________ milk．
A. is used to drinking; used to drink B. used to drink; uses to drink
C. used to drink; is used to drinking D. is used to drink; is drinking
【单选题】
14. I don’t know the teacher is talking with Miss Wang．
A. what B. whom C. who D. which
【单选题】
15.Millie does __________ that many people are thankful to her．
A. such an important and helpful job B. so important and helpful work
C. a very important and helpful job D. such an important and helpful work
【单选题】
16. I think eating more vegetables is good _______ our health.
—Yes, I agree _______ you.
A. at, to B. for, with C. to, to D. for, to
