轮机英语船舶动力装置章节练习(2017.12.23)

单项选择题
Opening of the cylinder （） will admit compressed air into the cylinder.
A.safety valve
B.indicator cock
C.blow-down valve
D.start valve
单项选择题
A common trouble with the fuel pump plungers or fuel valve spindle is （）.
A.broken down
B.stuck
C.oil leakage
D.carbonized
单项选择题
To prevent the build up of high stresses engine must not be run continuously （）.
A.faster than dead slow speed
B.slower than dead slow speed
C.with the output of MCR
D.at critical speeds
单项选择题
The main bearing shells often have a thin （） of lead or indium to provide a layer giving protection against corrosion.
A.flange
B.flash
C.plate
D.sheet
单项选择题
The film of oil between the rings and the liner is not only essential for the lubrication but also （） achieving a gas seal.
A.play a great part on
B.run a role in
C.plays an important part in
D.acts as important part at
单项选择题
An overspeed safety device is usually fitted to a generator engine for （） in the event of overspeed.
A.cutting power off the engine
B.increasing the fuel pump setting
C.braking the crankshaft
D.stabilizing the ship speed
单项选择题
Mechanical lubricators for diesel engine cylinders are usually small reciprocating pumps which are （）.
A.operated manually once an hour
B.operated until the engine has started
C.placed into operation only at maximum load
D.adjustable to meet lubrication requirements
单项选择题
The （） in the injector will lift at a pre-set pressure which ensures that the fuel will atomize once it enters the cylinder.
A.needle valve
B.nozzles
C.piston
D.spring
单项选择题
Please draw out a 01 mm （） between the two halves of the bearing to reduce the clearance.
A.shim
B.gasket
C.washer
D.packing
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