题目内容

装配图中,若干相同的零、部件组,可仅详细地画出-组,其余只需用下列线形中的哪―种表示其位置

A. 粗实线
B. 细实线
C. 细点画线
D. 粗点画线

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更多问题

当两个零件接触时,在同一方向应避免一个以上的表面同时接触

A. 对
B. 错

轴与孔配合且轴肩与端面相互接触时,在两接触面的交角处不应加工退刀槽、倒角

A. 对
B. 错

____career you choose,effective communication skills will serve you well.

A. Whenever
B. Wherever
C. Whatever
D. Howerver

Studies have shown that humans working with machines are ____than a human or a machine working alone.

A. more effective
B. most effictive
C. effictive
D. least effictive

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