题目内容

比例是与的比值,在画图时应尽量采用比例,必要时可采用放大或者缩小比例,1:10为比例,10:1为比例。

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绘图工具丁字尺是用来画____线。

I wish I _____ the meeting last week.

A. could attend
B. attended
C. have attended
D. could have attended

尺寸标注时,球体的直径标注应该为____。

He’s always talking like that, as if the whole world _____to himalone.

A. had belonged
B. belonged
C. were belonging
D. were belonged