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【简答题】
在电动机的控制电路中,热继电器与熔断器各起什么作用?两者能否互相替换?为什么?
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皮皮学刷刷变学霸
举一反三
【多选题】In your email exchange with a professor, you can mention his/her publications with an effort to _______.
A.
raise an interesting question about it
B.
suggest some extensions of it
C.
mention some applications of it
D.
relate it directly to your work
【单选题】You professor raise your kids your way; I’ll take care of my own. Me, I’m out___ make money.
A.
to
B.
of
【单选题】下列纯培养、无菌操作技术中,( )是错误的。
A.
在无菌条件下，对单独一种微生物进行培养；
B.
在微生物的分离、转接、培养过程中，需采取一定措施，尽量减少杂菌的传入，从而保证微生物的纯培养；
C.
接种前工作台面、操作人员双手需用95%酒精擦拭消毒；
D.
接种工具和容器口部在接种前后须经火焰灼烧灭菌；
【单选题】题 __________they who did the thorough cleaning to the classroom yesterday.
A.
These were
B.
That was
C.
It was
D.
Those were
【单选题】__________they who did the thorough cleaning to the classroom yesterday．
A.
These were
B.
That was
C.
It was
D.
Those were
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