higher；reduced
higher；increased
lower；reduced
lower；increased
第1题：
To reduce the weight of the reciprocating parts, pistons of high-speed engines are made considerably shorterThis results in __________.
A.less piston slap and quieter running
B.increased crankshaft bearing wear
C.slightly greater piston wear
D.decreased side pressures
第2题：
第3题：
Each cylinder liner on the marine medium speed engines _____.
A.is usually cooled by sea water
B.can be replaced when worn out
C.is in direct contact with the water in the bore of the cylinder
D.can t expand when heated
第4题：
less even torque
higher cylinder head temperatures
fewer power strokes per revolution
greater weight/size requirements
第5题：
through bolts
turbo-chargers
bed plates
columns
第6题：
A VLCC（100，000 DWT+）with a 30，000 Shaft Horsepower Steam Turbine is slow to respond to engine movements and has less stopping power than normal ships because it has a ______．
A.Bigger propeller
B.Smaller power weight ratio
C.Smaller propeller
D.Larger power weight ratio
第7题：
the extra weight required for the diesel reduction gearing
a minimum speed for the engines that limits the minimum speed of the vessel
the higher fuel consumption per SHP
the low efficiency of the system when a controllable pitch propeller is used
第8题：
If the compensating needle valve of a hydraulic governor is opened more than necessary the governor will .
A.have a larger than normal dead band
B.produce excessive speed response to a load change
C.respond slowly to any change in engine load
D.stabilize engine speed at the new governor setting
第9题：
Slow speed diesel engines
Medium-speed diesel engines
Steam engines
Gasoline engines
第10题：
connecting rods
crankshaft
crankcase
through bolts