() play a very important part in hydraulic systems by preven

题目
单选题
() play a very important part in hydraulic systems by preventing interaction between different parts of the hydraulic circuit.
A

Motors

B

Check valves

C

Safety valves

D

Reducing valve

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相似问题和答案

第1题:

Which of the following is implied in the passage?

A.A very important purpose of bank-supervision is to provide adequate capital for their operation.

B.A very important purpose of bank-supervision is to ensure banks to operate with adequate capital.

C.A very important purpose of bank-supervision is to put additional restrictions on the banks' operations.

D.A very important purpose of bank-supervision is to concentrate on risks.


正确答案:B
解析:通读全文,可推知这段文章所隐含的意思是银行监管的目的在于保证资本的充足率。

第2题:

the british media play an important role in shaping a national culture. ()


参考答案:正确

第3题:

A fad () a very short time and is not very important.

A.go on

B.supports

C.lasts

D.uses


参考答案:C

第4题:

______ is not usually used in liquid cargo systems.

A.Hydraulic drive systems

B.Electric drive systems

C.Steam drive systems

D.Man-powered drive systems


正确答案:D

第5题:

His parents can play the drums very well.(对划线部分提问)

_______ _______ his parents play very well?


正确答案:
44.What can 

第6题:

VIP是以下哪组词的翻译

A. Very important place

B. Very interesting person

C. Very important person

D. Very interesting place


正确答案:C

第7题:

Parents play a very important __________ in their children's education.

A、classmate

B、offer

C、ripe

D、role


正确答案:D

第8题:

Friends play an important part in our lives, but we don&39;t know much about how to make friends. As we get to know people, we consider things like age, races, looks and social positions. Thus it is more difficult for people to become friends if there is a big difference in age and background. However, some people don&39;t think these factors are of the most importance.


正确答案:

朋友在我们的生活中扮演着重要的角色,但我们对如何交朋友却知之甚少。当我们认识人时,我们会考虑年龄、种族、外表和社会地位。因此,如果年龄和背景有很大的差异,人们就很难成为朋友。然而,有些人并不认为这些因素是最重要的。

第9题:

______ play a very important part in hydraulic systems by preventing interaction between different parts of the hydraulic circuit.

A.Motors

B.Check valves

C.Safety valves

D.Reducing valves


正确答案:B

第10题:

The boys enjoyed()football very much.

Aplayed 

Bplaying 

Cplay 

Dto play


B

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