When connecting the power supply of the rack, the ground cable can be connected or not - 快问云问答

第1题

His expression is as ________ when he smiles as when he is arguing.

A.exceed

B.earnest

C.distinguish

D.proclaim

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第2题

When was the Great Exhibition？_______1851.

A.Of

B.On

C.At

D.In

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第3题

It ______ raining when they left home.

A.is

B.are

C.was

D.were

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第4题

性能验证的5W1H指什么（)

A.Why,When,What,Where,Who,How

B.Why,When,Which,What,Where,How

C.Why,Would,What,Where,Which,How

D.When,What,Where,Who,How

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第5题

When boundaries between countries are not clearly （), there is trouble.

A.defined

B. define

C. defend

D. defended

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第6题

I hate anybody _____ when I am telephoning.

A.listening

B.listen

C.listens

D.listened

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第7题

We jumped with joy when we ______ their success.

A.heard of

B.heard from

C.heard for

D.heard over

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第8题

Mary used to _____in plays when she was in college.

A.act

B.active

C.action

D.activity

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