海船船员考试
单选题The effective pump stroke of an individual port-and-helix fuel injection pump is determined by the （）A fuel delivery pressureB pump plunger diameterC plunger control rack positionD total pump stroke
题目
fuel delivery pressure
pump plunger diameter
plunger control rack position
total pump stroke
参考答案和解析
相似问题和答案
第1题：
Any increase in the exhaust back pressure of a four-stroke/cycle diesel enginewill( ).
A.reduce engine horsepower output
B.aid in silencing the exhaust noise
C.increase the mean effective pressure
D.contribute to effective cylinder scavenging
解析：aid：援助;contribute to：对…起作用
译文：四冲程柴油机排气背压升高将会减少发动机的功率输出。
第2题：
If all other conditions such as bore, stroke, speed, and mean effective pressures are equal, a two stroke/cycle diesel engine will develop approximately
A.the same indicated horsepower as a four-stroke/cycle engine
B.twice the indicated horsepower as a four-stroke/cycle engine
C.one half the indicated horsepower as a four-stroke/cycle engine
D.one power stroke for every two crankshaft revolutions
第3题：
When working in an environment that uses learning curves, the most effective plan for creating the perception that pay is related to performance is to provide the team members with an individual salary plus bonus based upon
A Individual productivity
B Cost effectiveness
C Group or team productivity
D Rating system developed by the project manager
E All of the above
第4题：
ram relief valves bypass oil to stop rudder movement
six-way valve shifts to the neutral flow position
steering pump electric motor is de - energized by the transfer switch
follow-up gear takes the hydraulic pump off stroke
第5题：
During the valve overlap period, the exhaust pressure of a turbocharged four-stroke/cycle diesel engine must be less than the intake manifold pressure to ensure ______.
A.effective cylinder scavenging and cooling
B.constant pressure from the turbochargers
C.cooler operation of the exhaust system
D.effective constant pressure for turbocharger operation
第6题：
The plunger in a jerk pump is rotated until the release port is uncovered If the port remains uncovered all of the time, which of the listed operations will occur?
A.No fuel will be delivered
B.The maximum effective stroke will be attained
C.The fuel delivered to the cylinder will be excessive
D.The injection nozzle will overheat and carbonize
第7题：
An increase in the fuel injection pump discharge pressure can be caused by a/an _______.
A.leaking delivery valve
B.excessive bearing end play
C.plugged injector spray hole
D.increased plunger stroke
第8题：
The most effective team motivator is:
A the visibility of the team's contribution
B the satisfaction of meeting a challenge
C understanding the importance of the project
D the individual's professional challenge
E All of the above.
第9题：
简述H-pump stroke time out报警信息的含义及处理方法。
正确答案: 高压泵行程超时是因为在高压泵中有空气或者管路中堵塞，造成部分空间有真空现象，致使高压泵不能够将液体顺利吸排，这样高压泵的工作强度增大，泵行程超时。
产生原因：
做样的样品中有气泡，杂质较大的牛奶被混进去堵塞了管路。用6060调零液体放在取液器下，选择排气（Deairing或者Soak），当此方法使用无效时候，可以采用“针管法”。
第10题：
once every crankshaft revolution
once every two crankshaft revolutions
once every piston stroke
twice every piston stroke