问题
单项选择题
（）的作用是将输入的压缩空气的压力转变为转动制动凸轮的机械力，使车轮制动器产生制动力。
A.调压机
B.制动阀
C.制动气室
D.空气压缩机
答案
参考答案：C
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（）的作用是将输入的压缩空气的压力转变为转动制动凸轮的机械力，使车轮制动器产生制动力。
A.调压机
B.制动阀
C.制动气室
D.空气压缩机
参考答案：C
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| One night a hotel caught fire (失火), and the people in the hotel ran out in their 1 clothes. Two men stood outside and looked at the fire. " 2 I came out," said one, "I ran into some of the rooms and found a lot of 3 . People don't think of money when they are 4 . When anyone leaves paper money in a fire, the fire 5 it. So I took all the money I could find. 6 will become poorer because I took them." "You don't know me," said the other, "and you 7 my work." "What's your work?" "I'm a policeman." "Oh!" 8 the first man. He thought quickly and said, "And do you know my 9 ? I'm a writer. I'm always telling stories about the things that 10 happened." | ||||
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