题目内容

平面汇交力系合成方法有。

A. 几何法
B. 解析法
C. 画图法
D. 分解法

查看答案

搜索结果不匹配？点我反馈

更多问题

几何法求解平面汇交力系平衡，需要将力依次首尾相连。

A. 对
B. 错

It was Friday evening. Mr and Mrs. Green _____ ready to fly to England.

A. are getting
B. get
C. were getting
D. got

Lei Feng ___ always _ of others when he ____ in the army.

A. is, thinking, was
B. was, thinking, is
C. did, think,is
D. was, thinking, was

A girl __ my pen fall off the table when she _ me.

A. saw, passed
B. was seeing, passed
C. was seeing, passed
D. was seeing, was passing