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【判断题】
模数m反映了齿轮轮齿的大小，模数越大，轮齿越大，齿轮的承载能力越大。A.
正确
B.
错误
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【简答题】阅读理解。 The students in America usually begin high school at the age of 13 or 14. Some leave at the age of 16.But most finish the 4-year high school study. They do not get their first full-time work or ...
【简答题】.Was it through Mary , ____ was working at a high school , _____ you get to know Tom ? A．who, who B．that, which C．who, that D．who, which
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