轮机英语船舶动力装置章节练习(2018.01.25)

单项选择题
Maintaining the lowest possible scavenging air temperature at all times is not recommended due to the possibility of the （）.
A.air charge density becoming too high
B.piston crown surfaces becoming too cold
C.formation of excessive quantities of condensate
D.compression pressure being greatly reduced
单项选择题
Which of the following conditions may need to be reduced when operating a large, low speed, main propulsion, diesel engine at low loads?（）
A.Injection pressures
B.Control air supply pressure
C.Cooling water flow through after-coolers
D.Lube oil temperature
单项选择题
For diesel engine piston cooling, lubricating oil can be supplied to the pistons by a/an （）.
A.oil spray
B.oil bath
C.oil control rings
D.drilled passage through the camshaft
单项选择题
After fitting back in place the gear wheels, dont forget （） them.
A.to grease
B.greasing
C.oiling
D.lubricating
单项选择题
The words such as quantity, grade, viscosity and specific gravity should be in the （）.
A.repair list
B.spare parts order list
C.price list
D.bunker list
单项选择题
（） supplies pilot air to control the cylinder air start valves.
A.An air compressor
B.An indicator cock
C.An air distributor
D.A safety valve
单项选择题
The cylinder head, cylinder liner and （） form the combustion chamber.
A.frame
B.piston
C.crankcase
D.explosion plate
单项选择题
The high pressure in fuel injection system of the diesel engine is produced by the （）.
A.injector pump
B.fuel injector
C.governor
D.turbocharger
单项选择题
High exhaust temperature and black smoke exhausting from an auxiliary diesel engine can be caused by （）.
A.engine overload
B.low combustion temperature
C.plugged fuel nozzle holes
D.excessive compression pressure
单项选择题
Fuel oil is thought to be one of the main factors （） the operation and maintenance of an engine.
A.have nothing to do with
B.having nothing to do with
C.have much to do with
D.having much to do with