题目内容

1. Liu Gang:He is very careful and likes to work with numbers.( )2. Lisa: She likes to travel, meet people and make new friends.( )3. Sue: She wants to work in an office, organising files, doing reception and answering calls.( )

查看答案
更多问题

质点系对任意一点的动量矩对时间的导数等于作用于该质点系的所有外力对同一点的矩的矢量和。

A. 对
B. 错

质心轴转动惯量是所有平行于质心轴转动惯量的最大值。

A. 对
B. 错

质点系动量矩的变化与外力有关,与内力无关。

A. 对
B. 错

质点系对某点动量矩守恒,则对过该点的任意轴也守恒。

A. 对
B. 错

答案查题题库