not taper what so ever
the skirt being tapered and smaller than the crown
the skirt being tapered and larger than the crown
the crown being tapered and smaller than the skirt
第1题：
greater high temperature strength
better heat conductivity
greater weight per cubic inch
increased resistance to wear
第2题：
wheelhouse control station
engine room control station
captains office
chief engineers office
第3题：
The closing of the exhaust valves used on a modern, large, low-speed, main propulsion diesel engine may be directly provided by_______.
A.large conical springs
B.compressed air pressure
C.hydraulic pressure
D.exhaust gas pressure
第4题：
increasing the quantity of starting air
increasing the lube oil pressure
heating the engine fuel supply
heating the engine coolant
第5题：
cooling water leaving each cylinder
fuel oil entering the injector
exhaust gases at various locations
lube oil at the bearing supplies
第6题：
an isochronous governor
elastic engine mounts
a vibration damper
a cast iron bed plate with good flexible qualities
第7题：
inefficiency
oiliness
detergency
purity
第8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9题：
higher
lower
the same
none of the above
第10题：
fuel oil vapor at the sludge tank vent
unburned fuel vapors in the scavenge air receiver
lube oil vapors in the crank case
lube oil vapors in the engine room