题目内容

在设计中可以采用哪些措施提高机械零件的疲劳强度?

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从表现形式来分,雕塑可分为()

A. 圆雕
B. 透雕
C. 浮雕
D. 塑雕

Fill in the blanks with the proper words or expressions given below, changing the form if necessary.There are ___________ in everything, old or new.

Fill in the blanks with the proper words or expressions given below, changing the form if necessary.In this busy world, we need more ___________ .

Fill in the blanks with the proper words or expressions given below, changing the form if necessary.Do you always ___________ with your friends home and abroad?

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