问题
单项选择题
汽车气压制动排气缓慢或不排气，应检查（）
A、制动阀
B、制动操纵机构
C、制动操纵机构和制动阀
D、制动凸轮轴的配合间隙
答案
参考答案：B
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汽车气压制动排气缓慢或不排气，应检查（）
A、制动阀
B、制动操纵机构
C、制动操纵机构和制动阀
D、制动凸轮轴的配合间隙
参考答案：B
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| I am near-sighted, and my eyesight is getting worse, because I play too many computer games and watch too much TV. I really play computer games a lot. There are so many different games and I spend all my time in playing them. When I play computer games, I always forget about my other plans. I am a bit ashamed (害羞) of this habit (习惯). I also like watching television. Sometimes I turn on my TV even while I am doing my homework. I usually sit one metre away from my TV and watch it for hours if my parents do not ask me to do something else. I know how bad my eyesight is when I am in a car. I look out of the window and see shops, but I can't see the signs clearly. I have to guess the shop names from from curves (弯曲物) and lines. I try my best not to wear glasses, because they change my appearance and make me look like a hen. I hate my eyes for making me wear glasses during school hours. I love my eyes at the same time because they let me see the beautiful world. Love your eyes and don't play too many computer games or watch too much TV. The world will be dark after you become near-sighted.
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