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【多选题】
如果一个平面力系的简化结果为一个合力偶,则A.
这个的主矢为0
B.
这个的主矩为0
C.
这个的主矩的大小与简化中心位置无关
D.
这个还可以进一步简化
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举一反三
【单选题】Part B (10 points) You are going to read a list of headings and a text about the problem of staff recruitment of most companies. Choose a heading from the list A—F that best fits the meaning of each n...
A.
appreciation as the main factor
B.
selection tests help in recruitment
C.
praise the men who act well
D.
to know why employees leave
E.
reasonable reward and fair treatment
F.
exchanges inside the company
【简答题】引言写法:查阅文献写背景、联系任务写目的、解决问题写()。
【单选题】Choose the meaning of the underlined word according to the context. 1. N o one save an old man-servant--a combined gardener and cook--had seen in at least ten years.
A.
to keep sb/sth safe from death, harm, loss, etc.
B.
to keep money instead of spending it, especially in order to buy a particular thing
C.
except sth
【简答题】结缔组织按其形态结构和功能，可分为（）、（）、（）、（）、（）、（）、（）7种。
【简答题】Task 1 work out the meaning of the following words and phrases and then choose the correct one to complete the sentences. remove previous safety hazard general regulation slippery ...
【简答题】___________ is an adj., meaning that you can choose whether or not you do it or have it, with the letter "O" at its very beginning.
【单选题】Choose the word or phrase that can replace the underlined part in each sentence without changing its original meaning. Sometimes she wishes she could give it all up and o to live a carefree life in th...
A.
normal
B.
colorful
C.
peaceful
D.
cheerful
【简答题】绕 X 、 Y 、 Z 轴旋转的回转运动坐标轴是( )A.B.C.D.E. E
【多选题】笛卡尔式运行是在世界坐标系下移动机器人,沿坐标系的坐标轴方向平移(直线)( ),环绕着坐标系的坐标轴方向转动(旋转 /回转)( )
A.
沿 X、Y、Z轴平移
B.
角度 A、B、C
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