在绘制装配图时，当绘制直径或厚度小于()的孔或薄片以及较小的间隙时，允许夸大画法。

The old lady was immediately sent to a nearby hospital when she______from heart stroke.A．passed awayB．passed offC．passed outD．passed by 点击查看答案

道家的宇宙观是：()

A.天
B.地
C.道
D.虚无

点击查看答案&解析