题目内容

两曲面立体形体相切组合时,在相切处()。

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两曲面立体相交时,交线是两曲面立体的()。

识读下面楼梯的结构施工图，可知ATb1的他把板厚度为 mm。

A. 100
B. 120
C. 150
D. 280

‎Kids are more likely to ________ in a situation if they believe their parents expect them to help.

A. interact
B. intervene
C. interview
D. react

‎Just as I started to think that I was never going to get well, the illness began to ________.

A. bleak
B. dismay
C. recede
D. proceed