题目内容

理论力学研究力的外效应和内效应。

A. 对
B. 错

查看答案

搜索结果不匹配？点我反馈

更多问题

铸铁拉伸时，也有屈服极限ss。

A. 对
B. 错

1. If you go by _______train, you can have quite a comfortable journey.

A. a
B. /
C. an
D. the

2. As she reached the front door,Lily saw ___________strange sight.

A. /
B. the
C. an
D. a

3. All the women teachers and their ____________students are having a meeting there.

A. girl
B. girls
C. girls'
D. girl's