单选题The camshaft drive is designed to maintain proper camshaft speed relative to crankshaft speedIn maintaining this relationship, the camshaft drive causes the camshaft to rotate at（）A one half crankshaft speed in a two-stroke cycle diesel engineB cranksh

题目

单选题

The camshaft drive is designed to maintain proper camshaft speed relative to crankshaft speedIn maintaining this relationship, the camshaft drive causes the camshaft to rotate at（）

one half crankshaft speed in a two-stroke cycle diesel engine

crankshaft speed in a two-stroke cycle diesel engine

two times crankshaft speed in a two-stroke cycle diesel engine

one-fourth times crankshaft speed in a four-stroke cycle diesel engine

相似考题

1.● A well-designed system should be（73）.①easily understood②reliable③straightforward to implement④straightforward to maintain（73）A．①②B．①③④C．②③④D．①②③④

2.A technician has identified prohibited content on a user’s hard drive. Which of the following should be done NEXT?()A. Warn the userB. Report through proper channelsC. Wipe the driveD. Give the computer back to the user

3.Procedures for the proper control and screening of checked baggage are designed to prevent ()from being introduced into the baggage compartment of an aircraftA.weaponsB.explosivesC.hair mouseD.ammunition

4.Because the timing of injection is crucial, _____ mounted on the camshaft, which is driven by the crankshaft are used to operate the fuel pumps, one of which is provided for each cylinder.A.gearsB.ramsC.barrelsD.cams

参考答案和解析

正确答案： A

解析：暂无解析

更多“The camshaft drive is designed to maintain proper camshaft s”相关问题

第1题：

In America, which of the following is NOT the requirement for the students wanting to get their driver's license?
A. They must be 16 years old.
B. They should go to have their driver's test.
C. They must reach the proper age to drive.
D. They ought to do well in their driver's course.

正确答案：A
54．答案为A 从最后一段第一句可看出在美国，不是每个州都要求驾驶员年满16岁，B、C、 D选项是必需的条件。
第2题：

On a ship，a door that is required to be marked KEEP CLOSED is designed to ______．
A.prevent the passage of flammable gases
B.prevent the passage of poisonous vapors
C.delay the spread of heat and flames
D.maintain watertight integrity

正确答案：D
第3题：

A technician has identified prohibited content on a user’s hard drive. Which of the following should be done NEXT?（）
- A、Warn the user
- B、Report through proper channels
- C、Wipe the drive
- D、Give the computer back to the user
正确答案:B
第4题：

Bob, a technician, is adding a secondary IDE hard drive to an older system. After installation and the first boot, the drive is not showing in Disk Management. Which of the following is the MOST likely cause of the issue?（）
- A、The new drive’s jumper is set for master.
- B、The new drive is connected to the secondary bus as a slave drive.
- C、Both drives’ jumpers are set for cable select.
- D、The old drive’s jumper is set for master and the new drive is set for slave.
正确答案:A
第5题：

单选题
While underway, which of the following would be the FIRST step in reversing a direct reversing large, low-speed, main propulsion, diesel engine?（）
A
Manually trip the over-speed device
B
Interrupt the fuel flow to the engine
C
Disengage the safety interlock
D
Slide the camshaft to the neutral position

正确答案： B
解析：暂无解析
第6题：

单选题
The reversing cams of some four-stroke/cycle diesel engines are brought into position by （）
A
sliding the camshaft along its axis
B
rotating the cam 180
C
rotating the cam followers 180
D
moving the idler sprockets in the drive chain

正确答案： C
解析：暂无解析
第7题：

单选题
A floppy drive is replaced in a computer and now when the computer is turned on the floppy drive light is constantly lit. Which of the following is the MOST likely cause?（）
A
The power supply has failed.
B
The drive cable is connected backwards.
C
The floppy drive has failed.
D
The proper drivers have not been loaded.

正确答案： D
解析：暂无解析
第8题：

单选题
The arrangement and shape of the cams on a diesel engine camshaft directly control which of the listed groups of operating conditions?（）
A
speed, torque, and horsepower production
B
firing order, valve timing, and valve lift
C
fuel consumption, efficiency, and cylinder pressure
D
scavenge pressure, compression ratio, and exhaust pressure

正确答案： D
解析：暂无解析
第9题：

单选题
If a four-stroke/cycle diesel engine is running at 1550 RPM, the speed of the camshaft will be（）.
A
525 RPM
B
775 RPM
C
1550 RPM
D
1800 RPM

正确答案： B
解析：暂无解析
第10题：

单选题
When the direction handle of telegraph is moved, the relative position of camshaft and crankshaft will be（）
A
changed accordingly
B
unchanged
C
positioned ahead
D
positioned astern

正确答案： B
解析：暂无解析
第11题：

单选题
（）by an ice-breaker, it is important to maintain a continuous listening watch on the appropriate VHF channel and to maintain a proper look-out for sound and visual signals.
A
which is assisted
B
that assist you
C
when you assisted
D
when being assisting

正确答案： C
解析：暂无解析
第12题：

单选题
In a four-stroke/cycle diesel engine, the camshaft rotates at （）
A
twice the crankshaft speed
B
half the crankshaft speed
C
the same speed as that of the crankshaft
D
a speed independent of that of the crankshaft

正确答案： A
解析：暂无解析
第13题：

You are on a tanker designed to carry molten sulfur．Which statement is TRUE ________．
A.There must be two portable toxic vapor detectors on board
B.The cargo tank ventilation system must maintain the H2S vapor concentration at 1.85% or more by volume
C.Cargo temperature may be taken by portable thermometers
D.The pressure in the heating coils in the tanks must be less than that of the cargo exerted on them

正确答案：C
第14题：

__________is the proper pronunciation of the segment "what's this" in connected speech?

答案：B
解析：
考查音系学中的发音规则。[z]因受前音[t]的影响，变成自己相对的清音[s]。
第15题：

In order to ensure there is proper airflow in a new computer, which of the following should be performed?（）
- A、Install a passive hard drive cooler.
- B、Unplug the redundant power cables from the motherboard.
- C、Install rounded IDE cables.
- D、Drill holes in the PC's case to create more airflow
正确答案:C
第16题：

A floppy drive is replaced in a computer and now when the computer is turned on the floppy drive light is constantly lit. Which of the following is the MOST likely cause?（）
- A、The power supply has failed.
- B、The drive cable is connected backwards.
- C、The floppy drive has failed.
- D、The proper drivers have not been loaded.
正确答案:B
第17题：

单选题
What is the speed of the crankshaft in a four-stroke/cycle engine when the camshaft is turning at 750 rpm?（）
A
375 RPM
B
500 RPM
C
750 RPM
D
1500 RPM

正确答案： C
解析：暂无解析
第18题：

单选题
The expansion tank for a diesel engine closed cooling system is designed to maintain a constant head on the system and （）.
A
reduce water temperature
B
reduce water turbulence
C
provide an air cushion
D
allow for an increase in water volume as the engine warms up

正确答案： B
解析：暂无解析
第19题：

单选题
（） is usually driven by the engine camshaft and supplies pilot air to the cylinder air start valve.
A
An air receiver
B
An operating valve
C
An automatic valve
D
An air distributor

正确答案： A
解析：暂无解析
第20题：

单选题
The flywheel reduces speed fluctuations by （）
A
maintaining a constant rack setting
B
storing kinetic energy
C
maintaining equal exhaust pressure
D
maintaining even camshaft speed

正确答案： C
解析：暂无解析
第21题：

单选题
There is an injection pump for each cylinder, which is usually operated once every cycle by （） on the camshaft.
A
a gear
B
a cam
C
a rod
D
a miler

正确答案： A
解析：暂无解析
第22题：

单选题
An instrument designed to maintain a continuous record of atmospheric pressure is a(n)（）.
A
mercurial barometer
B
aneroid barometer
C
barograph
D
thermograph

正确答案： C
解析：暂无解析
第23题：

单选题
The camshaft on a four-stroke/cycle diesel engine provides a means to operate the （）.
A
fuel injectors
B
exhaust valves
C
intake valves
D
all of the above

正确答案： D
解析：暂无解析

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单选题The camshaft drive is designed to maintain proper camshaft speed relative to crankshaft speedIn maintaining this relationship, the camshaft drive causes the camshaft to rotate at（）A one half crankshaft speed in a two-stroke cycle diesel engineB cranksh

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相似考题

参考答案和解析

更多“The camshaft drive is designed to maintain proper camshaft s”相关问题

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