装配图中相同基本尺寸的孔和轴形成配合，为简化设计，国标规定了

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问题判断题

装配图中相同基本尺寸的孔和轴形成配合，为简化设计，国标规定了两种制度，应优先选择基孔制。

答案

参考答案：对

单项选择题

I knew nothing of the motives behind his recent move, and I don't know either the person to put him up to the action.

A．nor did I know ... who

B．not did I know ... that

C．nor do I know ... that

D．either did I know ... who

判断题

有伤口和出血的开放性骨折病人，必须先做伤肢骨折的临时固定，后止血处理伤口。