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单选题Electric generators can be protected against overload（）.A With switchesB With a governor on the engineC With fuses or circuit breakersD By using heavy wire

题目
单选题
Electric generators can be protected against overload（）.
A

With switches

B

With a governor on the engine

C

With fuses or circuit breakers

D

By using heavy wire

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相似问题和答案

第1题：

( ) can provide an asynchronous link between two ac electric power system with different nominal frequencies.

A.The HVDC (high voltage DC) transmission

B.The EHV (extra-high voltage) AC transmission

C.The AC distribution

D.Generators


参考答案：A

第2题：

Which protocol can cause overload on a CPU of a managed device?()

A. Netflow

B. WCCP

C. IP SLA

D. SNMP


参考答案：D

第3题：

Creation of project objectives:

A.allows for data collection and analysis and progress reporting against which standards of performance can be measured.

B.is accomplished by selection of measurable variables against which performance can be judged.

C.is required before funding of the project by the project sponsor.

D.all of the above.

E.A and B only


正确答案：E
E

第4题：

The electric fan has blown away the terrible smell in the hall,（）?

  • A、can't it 
  • B、isn't it 
  • C、hasn't it 
  • D、doesn't it

正确答案:C

第5题：

If an attempt is made to hoist a load that exceeds the capacity of an electric winch，an overload safety device causes a circuit breaker to cut off the current to the winch motor ______．

A.when the line pull reaches the rated winch capacity

B.after the line pull exceeds the rated winch capacity

C.after a short build-up of torque

D.immediately


正确答案：B

第6题：

Business models have taken on greater importance recently as a form. of intellectual property that can be protected with a patent.


正确答案：最近，商务模式作为一种知识产权的形式，能够受到专利保护，因而其重要性也凸现出来。

第7题：

Electrical circuits are protected against overheating by means of a/an _______.

A.circuit breaker

B.amplifier

C.diode （二极管）

D.capacitor


正确答案：A

第8题：

Thanks to the policy, the government is sending home-electric machines to farmers, they can pay much ________ ( 少的) money.


正确答案：
less

第9题：

We can utilize water for producing electric power.

A:employ
B:embrace
C:emerge
D:emphasize

答案：A
解析：
本句意思：我们能用水来发电。utilize意为“利用”，与employ（使用，利用）意思相近。 embrace拥抱；emerge出现；emphasize强调。

第10题：

public class MethodOver {   public void setVar （int a， int b， float c） {   }   }   Which two overload the setVar method？（）

  • A、 Private void setVar （int a， float c， int b） {}
  • B、 Protected void setVar （int a， int b， float c） {}
  • C、 Public int setVar （int a， float c， int b） （return a；）
  • D、 Public int setVar （int a， int b， float c） （return a；）
  • E、 Protected float setVar （int a， int b， float c） （return c；）

正确答案:A,C

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