皮皮学，免费搜题
登录
搜题
【单选题】
刚体体系与变形体体系虚功原理的虚功方程两者的区别在于（）。A.
前者用于求位移，后者用于求未知力
B.
前者用于求未知力，后者用于求位移
C.
前者的外力总虚功等于零，后者的外力总虚功等于其总虚应变能
D.
前者的外力总虚功不等于零，后者的外力总虚功等于其总虚应变能
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】Which of the following information is not necessarily exchanged between the master and the pilot before the pilotage commences.
A.
Local conditions and rules
B.
Number of crew on board
C.
Navigational procedures
D.
The ship' characteristics
【单选题】Which of the following statements is true about VHF? ____
A.
The VHF is used to bridge short distances. VHF
B.
With VHF, listening and speaking can be done simultaneously.
C.
When you wish to speak, you release the button.
D.
When you wish to listen, you push the button.
【单选题】Which of the following statements is NOT true?
A.
When they were climbing the mountain, two of them fell into the valley.
B.
The firemen arrived half an hour later.
C.
Mr. Zhang hurt his head..
D.
The accident happened on Mount Hua, Shanxi.
【单选题】Of the following sentences, which has the most emphatic theme?
A.
As the position stands, the unemployed are without any attraction of the snobbish.
B.
The unemployed are, as the position stands, without any attraction of the snobbish.
C.
As the position stand, the unemployed are without any attraction of the snobbish.
D.
As the position standing, the unemployed are without any attraction of the snobbish.
【单选题】Whicb of the following numbers indicates a ship station MMSI?
A.
003372694.
B.
623944326,
C.
030356328.
D.
3384672.
相关题目：
参考解析：
知识点：
题目纠错 0
发布
