更多"When attempting to restart a warm h"的相关试题:
[单项选择]Critical speed in diesel engines occurs when engine torque pulsations become （）
A. opposed to the crankshaft rocking couple
B. resonant with the crankshaft natural frequency
C. critical fore and aft crankshaft vibrations
D. horizontal whipping motions of the crankshaft
[单项选择]When comparing different fuels for different engines, the ignition quality of diesel fuel oils becomes a less critical consideration as （）
A. the amount of lube oil additives increase
B. piston speeds increase
C. injection pressure decrease
D. engine speeds decrease
[单项选择]When transmitted by a reduction gear, diesel engine speed is reduced and the torque available for work （）
A. remains the same
B. is reduced
C. is increased
D. is eliminated
[单项选择]When attempting an upstream landing while pushing empty barges ahead in a hard onshore wind，the approach is best made（）.
A. with bow out，stern in
B. with bow in，stern out
C. parallel to the dock，as close in as possible
D. parallel to the dock，as far out as possible
[单项选择]When attempting to start a main propulsion diesel engine, the engine, the engine turns at the proper speed but will not startYou should check the（）
A. starting air pressure
B. scavenge air pressure
C. over-speed trip
D. banjo oiler line
[单项选择]When he suddenly（） up the subject of genetic engineering, there was an embarrassed silence.
A. took
B. brought
C. showed
D. came
[单项选择]When attempting to free an anchor jammed in the hawsepipe，the simplest method of freeing it may be（）.
A. Starting the disengaged windlass at high speed
B. Rigging a bull rope to pull it out
C. To grease the hawsepipe
D. To pry it loose with a short piece of pipe
[单项选择]Increasing the compression ratio of a diesel engine while maintaining the designed rate of fuel flow will result in （）
A. increased horsepower
B. reduced efficiency
C. increased heat loss
D. lower cylinder pressures
[单项选择]The exhaust system for a turbocharged diesel engine functions to （）
A. power the after-coolers
B. power the turbocharger
C. reduce the cylinder scavenge effect
D. cool the turbocharger
[单项选择]The diesel engine is similar to the gasoline engine in that （）.
A. both of them are ignited by compressed air
B. both of them are the forms of external combustion engines
C. both of them have spark plugs
D. the power is developed by the piston in the cylinder
[单项选择]Under which of the listed conditions can the engine room retake the throttle control from the bridge（）.
A. Any time it is deemed necessary
B. Only with the masters permission
C. After a 10 minute delay to the input command
D. Only after the throttle has been placed in stop
[单项选择]Starting a large low-speed propulsion diesel engine on diesel fuel during cold weather conditions, will be made easier by （）
A. increasing the quantity of starting air
B. increasing the lube oil pressure
C. heating the engine fuel supply
D. heating the engine coolant
[单项选择]Which cause of the following can lead to the engine not to start on air?（）
A. starting air pressure too high
B. correct timing of starting air valves
C. three of the starting valves stuck
D. the turning gear disengaged
[单项选择]The over-speed trip installed on most diesel engine will stop the engine by shutting off the （）
A. water supply
B. fuel oil supply
C. lube oil supply
D. exhaust damper
[单项选择]The marine diesel engine is a type of diesel engine used on ships The （） of its operation is not very difficult to understand.
A. principle
B. principal
C. cause
D. case
[单项选择]A twin screw vessel，making headway with both engines turning ahead，will turn more readily to starboard if you（）.
A. reverse port engine，apply right rudder
B. reverse port engine，rudder amidships
C. reverse starboard engine，apply right rudder
D. reverse starboard engine，rudder amidships
[单项选择]You are unable to pump out the aft starboard engine room bilge well that is fouled, with one foot of water over the top of the bilge well, what action should be carried out?（）
A. Send the wiper into the well with only a scoop and pail
B. Remove the bilge manifold valve and attempt to back flush the line
C. Simultaneously operate all available bilge pumps
D. It is only necessary to transfer half the contents of a drum of degreaser into the bilge well
