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【单项选择题】

Why is it desirable to operate paralleled AC generators at the same power factor?()

A、A.Circulating currents are kept to a minimum

B、B.Field excitation losses are kept to a minimum

C、C.Generator rotors will have a lesser tendency to hunt

D、D.Because a power factor increase will decrease kilowatt output

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第2题

A、Because it is difficult to plan and manage  B、Because it is cannot be well categorized  C、Because it is a difficult work for people to undergo  D、Because it is seldom researched by research  

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第3题

A、Because it was the first colony established by Britain in 1788.  B、Because it is the biggest state in Australia.  C、Because it is the most important state in Australia.  D、Because it has the largest population in Australia.  

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第4题

A、Lowering it into a cradle  B、Placing it in a desired position  C、Spotting it with wash primer and red lead  D、Two-blocking it  

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第6题

A、itis newer  B、it has smaller timers  C、it has less overhead  D、itis not timer-based  

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第7题

A、It is a long way from here.  B、Sorry, I am new here.  C、Why don't you walk?  D、Here it is.  

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第8题

A、It uses inexpensive hubs  B、It operates without collisions  C、It operates on switches  D、It provides faster data transfer  E、It utilizes fewer wiring pairs  

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第9题

A、Because Uluru is located there.  B、Because it is extremely hot and dry.  C、Because it consists of miles and miles of red-sand desert and mountain ranges.  D、Because it lies in the tropics.  

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