轮机英语船舶动力装置章节练习(2017.12.17)

单项选择题
The （） or balance tank collects the re-circulated fuel oil.
A.buffer
B.sump
C.bilge
D.overflowing
单项选择题
In using reduction gears to obtain efficient propeller speeds, （）.
A.they must be located at the after end of the engine
B.they can only be used with one engine at a time
C.they eliminate the need for controllable pitch propellers
D.they are connected to the engine with a flexible coupling
单项选择题
Which of the following firing order may be used for an 6 cylinder engine?（）
A.1-2-3-4-5-6
B.1-2-3-6-5-4
C.1-5-3-6-2-4
D.1-3-4-5-6-2
单项选择题
All the rings are slightly rounded on their external top and bottom edges to keep the oil film on the cylinder liner during （） for new piston rings.
A.the running-in period
B.the running process
C.gas exchange process
D.the boiler firing
单项选择题
If the engine does not start on air, it may be due to （）
A.low compression of the fuel pumps
B.incorrect timing of fuel pumps
C.the starting air valves stuck
D.air-locks in fuel oil pipeline
单项选择题
Diesel engine exhaust temperatures may be used to indicate （）.
A.leaking exhaust valves
B.an overloaded cylinder
C.a clogged injector nozzle
D.all of the above
单项选择题
In order to inspect both piston and cylinder wall thoroughly, the cylinder cover should be taken off and the piston should be （）.
A.craned out
B.rolled out
C.lifted out
D.turned out
单项选择题
After "F.W.E" is given, the air system is shut down, the （） gear put in, all drains and indicator cocks opened, and the cooling water kept running.
A.steering
B.timing
C.turning
D.running
单项选择题
（） for the camshaft gear train is taken from a spur gear which for a six cylinder engine is at the coupling end.
A.The driven gear
B.The drive
C.The grease
D.The lubricating oil
单项选择题
Exhaust valve grooving and corrosion is caused by certain components of residual fuel oilThese components are sodium, sulfur, and （）.
A.vanadium
B.carbon
C.copper
D.ash