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【单选题】
What is the cooling agent in the liquid cooling system? _______A.
Gasoline
B.
Air
C.
Lubricant
D.
Coolant
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反馈参考答案：
举一反三
【单选题】They seemed afraid to say what was in their mind, it might start trouble.
A.
since
B.
because
C.
for fear that
D.
although
【简答题】电动机变频调速系统主要包括异步电动机、( )、控制环节、负载及传动机构。A. 4
【多选题】____seemed to be a lot of difficulty in dealing with some many problems within a week. _____seemed that she was not interested in the topic they [ ]
A.
There
B.
It
C.
She
D.
They
【单选题】We shouldn't be __________any difficulties. [ ]
A.
angry with
B.
surprised to
C.
afraid of
D.
afraid to
【单选题】— I'm afraid I can't memorize so many new words in 2 days. — _______. [ ]
A.
Don't be afraid
B.
You are clever
C.
Not at all
D.
Take your time
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