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单选题In a simple mechanical governor, the （）A centrifugal force rotates the ball-headB flyweight centrifugal force is balanced by spring forceC flyweight centrifugal force is balanced by hydraulic pressureD speeder spring alone actuates the fuel control rod

题目
单选题
In a simple mechanical governor, the （）
A

centrifugal force rotates the ball-head

B

flyweight centrifugal force is balanced by spring force

C

flyweight centrifugal force is balanced by hydraulic pressure

D

speeder spring alone actuates the fuel control rod

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相似问题和答案

第1题：

grammar practice is usually divided into two categories, _______________.

A. meaningful drilling and communicative drilling

B. mechanical drilling and meaningful drilling

C. mechanical practice and meaningful practice

D. meaningful practice and communicative practice


正确答案是:C

第2题：

grammar pratice is usually dividied into two categories:_________________.

A、mechanical drilling and meaningful drilling

B、mechanical practice and meaningful practice

C、meaningful drilling and communcative drilling

D、meaningful practice and communicative practice


参考答案：B

第3题：

MEMS的英文名称是()

A.MECHANICAL-ELECTRO-MICROSYSTEMS

B.MICRO-ELECTRO-MECHANICALSYSTEMS

C.MICRO-MECHANICAL-ELECTROSYSTEMS

D.ELECTRO-MICRO-MECHANICALSYSTEMS


参考答案：B

第4题：

The major cause of trouble in a mechanical-hydraulic governor is contamination of the hydraulic fluid by ______.

A.dirt

B.fuel oil

C.governor cooling water

D.fuel oil tar(焦油)


正确答案：A

第5题：

For most diesel propulsion and generator engines, the over-speed trip device will stop the engine by

A.moving the governor control to stop

B.shutting off the lubricating oil supply

C.tripping the governor emergency stop lever

D.shutting off the fuel supply


正确答案：D

第6题：

Several unpopular decisions ____ the governor's popularity.

A、decayed

B、diminished

C、distorted

D、dissolved


正确答案：B

第7题：

If the compensating needle valve of a hydraulic governor is opened more than necessary the governor will .

A.have a larger than normal dead band

B.produce excessive speed response to a load change

C.respond slowly to any change in engine load

D.stabilize engine speed at the new governor setting


正确答案：B

第8题：

机械性传播(mechanical transmission)


正确答案：有些医学节肢动物对病原体的传播作用仅起携带。输送的作用，病原体在节肢动物的体表或体内均无数量和形态上的变化，这种传播方式称为机械性传播。

第9题：

A large change in ambient temperature, or using an oil of a viscosity different than the one recommended by the manufacturer in a mechanical hydraulic governor, will result in the need to adjust the

A.pilot valve opening

B.compensating needle valve

C.compensating spring tension

D.accumulator spring tension


正确答案：B

第10题：

MEMS的英文名称是（）

  • A、MECHANICAL-ELECTRO-MICROSYSTEMS
  • B、MICRO-ELECTRO-MECHANICALSYSTEMS
  • C、MICRO-MECHANICAL-ELECTROSYSTEMS
  • D、ELECTRO-MICRO-MECHANICALSYSTEMS

正确答案:B

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