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【单选题】
化合物 的顺反异构体和对映异构体共有几种? ( )A.
2
B.
3
C.
4
D.
5
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参考解析：
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皮皮学刷刷变学霸
举一反三
【简答题】请听下面10段对话。每段对话有一小题，从题中所给的ABC三个选项中选出最佳答案。 1. What has Peter bought? A. Vegetables. B. Milk. C. Fruit. 2. What does Frank like to watch? A. Fashion shoe. B. Beijing Opera. C. Football match. 3. How did ...
【单选题】Which one is NOT the component of a drum brake?
A.
Brake drum
B.
Brake disk
C.
Brake shoe
D.
Backing plate
【简答题】brake drum
【单选题】Which part is not mounted on the back plate in a drum brake?
A.
Adjuster
B.
Wheel cylinder
C.
Brake shoes
D.
Brake drum
【判断题】Peter has no time to study because he is crazy about playing video games.
A.
正确
B.
错误
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