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【单选题】
对软齿面的闭式齿轮传动,常因( )而失效。A.
齿面胶合
B.
齿面磨损
C.
齿面疲劳点蚀
D.
过载折断
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反馈参考答案：
举一反三
【单选题】In this passage the writer advised (劝告) people ______.
A.
not to move to a big city without thinking about the problems there
B.
not to think too much about the problems before they move to a big city
C.
to move to a big city
【单选题】Which is the best title for this passage?
A.
Big Cities.
B.
Interesting Things in Big Cities.
C.
Good School in Big Cities.
【简答题】According to the passage, credit cards are big business because credit card companies make a big profit from both ______.
【简答题】客户关系管理的基本理念?
【单选题】In this passage the writer thinks it is fight for people______.
A.
to move to big cities
B.
not to move to big cities
C.
not to move to big cities before they think over the problems of living there
【单选题】Which is not talked about in this passage?
A.
Big cities are better than small cities.
B.
Big cities are exciting places to live in.
C.
Big cities have a lot of serious problems.
【简答题】数据中心的设备在安装时分别怎么做到接地?
【简答题】According to the passage, the 'hierarchical' theory of galaxy formation suggests that big, bright galaxies formed as ______.
【简答题】数据中心的设备在安装时分别怎么做到接地?
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