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【判断题】
只要一个力系使物体保持静止，则称该力系为平衡力系。()A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】简述抽样应考虑的要求。
【简答题】简述抽取样品的方法及要求。
【单选题】X6132型万能铣床电动机的安装，一般采用起吊装置，先将电动机水平吊起至中心高度并与安装孔对正，再将电动机与（ ）连接件啮合，对准电动机安装孔，旋紧螺栓，最后撤去起吊装置。
A.
紧固
B.
转动
C.
轴承
D.
齿轮
【单选题】You are attending a meeting on Microsoft Windows Meeting Space. At the same time， you attempt to join a second meeting also hosted on Windows Meeting space. The dialog box that allows you to join the ...
A.
Join the second meeting by using Microsoft Office Live Meeting.
B.
Enable the Windows Media Player Network Sharing Service Windows Firewall exception.
C.
Click the Leave meeting option in the first meeting， and then join the second meeting.
D.
Open Windows Meeting Space， create a new meeting， and specify a password for others to use when they join the meeting.
【简答题】简述合理抽样的要求。
【简答题】A．The meeting is going on in Room 241. B． The meeting is cancelled. C．The meeting is about space technology. D．The meeting is held in the conference room.
【单选题】The tycoon is said in the newspaper ______the day before yesterday on his way to the airport.
A.
to be. kidnapped
B.
kidnapped
C.
to have been kidnapped
D.
having been kidnapped
【单选题】Which of the following is NOT an element in writing a minutes?
A.
Meeting Title
B.
Meeting Date
C.
Type of Meeting
D.
Introduction
【单选题】Could you tell me _____? [ ]
A.
when will the meeting start
B.
when the meeting will start
C.
the meeting will start when
D.
the meeting when will start
【简答题】简述抽样的基本要求。
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