【单选题】
正压式消防氧气呼吸器的高压系统经气密性试验，应保证在___ 内不漏气。
A. 10min
B. 20min
C. 30min
D. 40min
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答案
C
解析
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【单选题】
以下关于隔热防护服维护保养说法错误的是：___
A. 灭火或训练后，消防员隔热防护服应及时清洗、擦净、晾干
B. 隔热层和外层可以一起清洗，清洗时不能使用硬刷或用强碱，以免影响防水性能。
C. 消防员隔热防护服在运输中应避免与油、酸、碱等易燃、易爆物品或化学药品混装。
D. 消防员隔热防护服应贮存在干燥、通风的仓库中。
【单选题】
以下关于避火防护服维护保养说法错误的是：___
A. 使用后可用干棉纱将消防员避火防护服表面烟垢和熏迹擦净
B. 镀金视窗应用软布擦拭干净，并覆盖一层PVC膜保护，以备再用
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【单选题】
以下关于电绝缘装具说法错误的是：___
A. 电绝缘装具具有优良的耐电压性能，能与火焰及熔化物直接接触。
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【单选题】
公安消防部队在参与重大灾害事故应急救援中，二级个人防护为___。
A. 全身、封闭式防化服、全棉防静电内外衣、正压式空气呼吸器或全防型滤毒罐
B. 全身、内置式重型防化服、全棉防静电内外衣、正压式空气呼吸器或全防型滤毒罐
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【单选题】
公安消防部队在参与重大灾害事故应急救援中，三级个人防护为___。
A. 全身、封闭式防化服、全棉防静电内外衣、正压式空气呼吸器或全防型滤毒罐
B. 全身、内置式重型防化服、全棉防静电内外衣、正压式空气呼吸器或全防型滤毒罐
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【单选题】
处置大型化工装置、设施、油罐等事故，应及时要求___到场协助，及时控制火势，遏制爆炸。
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The word "wag" (Line 1, Para.1) most probably means _________.
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【单选题】
The video cameras were used to catch the dogs' responses because ___________.
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The underlined word "they" in the last sentence refers to __________.___
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The new law passed in Rome will ________.___
A. help improve fishing environment
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People in Rome believe that the civilization of a city can be judged by _________.___
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【单选题】
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People may break the law in Turin if they ________.___
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We can infer from the passage that _________.___
A. the owners can leave their dogs in hot cars
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C. the new law can prevent cruelty to animals
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If a person finds getting up early a problem, most probably ________.___
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【单选题】
Which of the following may lead to family quarrels according to the passage?___
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【单选题】
If one wants to work efficiently at his low point in the morning, he should __________.___
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【单选题】
You are advised to rise with a yawn and stretch because it will __________.___
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Which of the following statements is NOT true?___
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【单选题】
An effective way to prevent the burnout of young athletes is __________.___
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【单选题】
According to the passage sport is positive for young people in that __________.___
A. it can help them learn more about society
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【单选题】
Many coaches and parents are in the habit of criticizing young athletes __________.___
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【单选题】
According to the passage parents and coaches should __________.___
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【单选题】
The author's purpose in writing the passage is _________.___
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【单选题】
As pointed out at the beginning of the passage, people used to think that air pollution _______.___
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【单选题】
As to the greenhouse effect, the author ________.___
A. share the same view with the scientist
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The underlined word "offset" in the second paragraph could be replaced by _________.___
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【单选题】
It can be concluded that ____________.___
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This passage is primarily about __________.___
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【单选题】
What is the major function of paragraph 1?___
A. To arouse the reader's concern.
B. To introduce the theme of the whole passage.
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【单选题】
Television, as a source of entertainment, is ________.___
A. not very convenient
B. very expensive
C. quite dangerous
D. relatively cheap
【单选题】
Why are some people against TV?___
A. Because TV programs are not interesting.
B. Because TV viewers are totally passive.
C. Because TV prices are very high.
D. Because TV has both advantages and disadvantages.
【单选题】
One of the most obvious advantages of TV is that _________.___
A. it keeps us informed
B. it is very cheap
C. it enables us to have a rest
D. it controls our lives
