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【多选题】
在下列措施中,________可以降低齿轮传动的齿向载荷分布系数 。A.
提高齿轮的制造和安装精度
B.
提高轴系刚度
C.
增加齿轮宽度
D.
增大端面重合度
E.
轮齿加工齿
F.
轮齿进行齿顶
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举一反三
【单选题】Dietician is _____.
A.
to treat and care for your feet
B.
to help your strength, mobility and fitness
C.
to give you advice about the kind of food you should eat
【简答题】总体尺寸指 尺寸、 尺寸、 尺寸。
【简答题】听对话，根据其内容判断下列句子的正（T）误（F）。 ( )1. Frank likes movies. ( )2. Frank doesn't like action movies. ( )3. Tina likes thrillers and documentaries. ( )4. Tina's favorite actor is Zhou Xingchi. (...
【单选题】We know from the text that______.
A.
Frank couldn't decide which car to buy.
B.
Frank liked the small car better than the large one.
C.
Frank thought his old car was the best.
【判断题】A dietician is a person whose job is to give people advice about the kind of food they should eat.
A.
正确
B.
错误
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