默认题库 - 船舶电气与船舶安全 - 查题吧

单选题

At the beginning of the watch the current operational parameters and the condition of all machinery should be verified and also the log readings should correspond with those （）.

A. noted by the bridge officer
B. told by last duty engineer
C. observed
D. in the instruction manual

单选题

Which of the following problems represent one possible cause of high lube oil consumption in a four stroke diesel engine?（）

A. Worn intake valve guides
B. Pitted pre-combustion chambers
C. Loose valve tappets
D. High exhaust back pressure

单选题

There will usually be summaries or daily account tables for heavy oil, diesel oil, lubricating oil, and fresh water, which will be compiled（）

A. at the beginning of every watch
B. at the beginning of the first watch every day
C. at the completion of every watch
D. at noon every day

单选题

In the engine department, the （） is looked upon to provide the leadership that is needed.

A. captain
B. chief engineer
C. chief officer
D. chief motorma

单选题

Which of the following pumps will most affect oily water separator performance and give the worst result?（）

A. reciprocating pump
B. vane pump
C. screw pump
D. centrifugal pum

单选题

Cylinder linings constructed as an integral part of the block, are characterized by which of the following disadvantages?（）

A. They conduct heat poorly
B. They are expensive
C. They cannot be replaced
D. They require special tools for removal

单选题

If the jacket water temperature in an auxiliary diesel engine cooling system is lower than normal, the probable cause is （）

A. air binding of the engine cooling system
B. a cracked water cooled exhaust manifold
C. blockage in the heat exchanger
D. faulty operation of the thermostat

单选题

The DC excitation to the field of brushless synchronous is generally produced by （）

A. an exciter driven by the same shaft with the generator
B. an exciter driven by external prime mover
C. generator itself
D. either A and B

单选题

A large two-stroke/cycle direct reversing diesel engine is to be reversedPrior to the admission of starting air you must （）

A. line up the engine fore restarting with light diesel oil
B. reposition the fuel injection cam
C. change the intake and exhaust valve cam positions
D. place the starting cam in the intermediate positio

单选题

（）is put into use in the late years to maintain a preset tension in a mooring line after a ship has been tied up at a pier.

A. The large-tension mooring
B. The small-tension mooring
C. The variable-tension mooring
D. The constant-tension mooring

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