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【判断题】
热泵是能实现蒸发器与冷凝器功能转换的制冷机。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】Looking _____ carefully before making the final decision．( )
A.
about
B.
after
C.
back
D.
down
【单选题】Which is the MOST important consideration before making a change to a server？（）
A.
Explore the ramification of the change before implementation.
B.
Determine the service level agreement in place before implementation.
C.
Review the equipment disposal procedures and policies before implementation.
D.
Notify all staff members of the planned system outage before implementation.
【单选题】He is not very confident and always _______ before making a decision.
A.
considers
B.
hesitates
C.
reflects
D.
waits
【单选题】The housewives would usually ______ the fruit before making their minds up which to buy.
A.
pick out
B.
pick on
C.
pick up
D.
pick over
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