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【简答题】
简述千斤顶的工作原理
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举一反三
【多选题】Why do we have a wide use of passive voice in academic English?
A.
Being objective.
B.
The layout of information.
C.
It sounds better.
D.
It is simple and easier.
【单选题】在pH5.12时电泳,哪种蛋白质既不向正极移动也不向负极移动?( )
A.
血红蛋白( pI=7.07 )
B.
鱼精蛋白( pI=12.20 )
C.
清蛋白( pI=4.64 )
D.
α 1 - 球蛋白( pI=5.06 )
E.
β - 球蛋白( pI=5.12 )
【单选题】在 pH5.12 时电泳,哪种蛋白质既不向正极移动也不向负极移动?
A.
血红蛋白( pI=7.07 )
B.
鱼精蛋白( pI=12.20 )
C.
清蛋白( pI=4.64 )
D.
β - 球蛋白( pI=5.12 )
【单选题】滚动轴承的基本代号由( )组成
A.
(1)类型代号、尺寸系列代号和内径代号
B.
(2)前置代号、尺寸系列代号和后置代号
C.
(3)类型代号、尺寸系列代号和后置代号
D.
(4)前置、基本代号和后置代号
【单选题】Why do we use active voice in preference to passive?
A.
Because passive voice is more clear, direct, concise and accurate.
B.
Because active voice is more clear, direct, concise and accurate.
C.
Because what has been done should be emphasized.
【单选题】Why are passive candidates inactively pursuing a job opportunity?
A.
Because they already have jobs.
B.
Because they may be satisfied with their jobs at present.
C.
Because they are often loyal employees.
D.
All of the above.
【单选题】Why is passive used on passive interfaces participating in EIGRP?
A.
To stop unwanted route information from entering the specified interface
B.
To allow route information to be filtered by an access list
C.
To allow routes to be sent out the specified interface but deny route information to enter the interface
D.
To allow the interface to be advertised in EIGRP updates but not to send or receive EIGRP updates itself
【单选题】在 pH=5.12 时电泳,哪种蛋白质既不向正极移动也不向负极移动( )
A.
血红蛋白( pI=7.07 )
B.
鱼精蛋白( pI=12.02 )
C.
清蛋白( pI=4.64 )
D.
α - 球蛋白( pI=5.06 )
E.
β - 球蛋白( pI=5.12 )
【判断题】滚动轴承的基本代号由轴承类型代号和尺寸系列代号组成。
A.
正确
B.
错误
【单选题】Why do we need active sleep?
A.
To prepare for passive sleep.
B.
To rest our body.
C.
To stay healthy.
D.
To help us rest our minds.
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