更多"The most common instrument used to "的相关试题:
[单项选择]The most common diesel engine fuel system problems are caused by （）.
A. incorrect adjustments
B. dirty fuel
C. broken fuel lines
D. excessive vibration
[单项选择]A hand held instrument used to measure distances between objects and the ship is a（）.
A. vernier
B. psychrometer
C. hygrometer
D. stadimeter
[单项选择]Which instrument is used to measure the relative humidity of air?（）
A. Hydrometer
B. Hygrometer
C. Spectrometer
D. Barometer
[单项选择]A pyrometer is an instrument used to measure the temperature of the diesel engine（）
A. exhaust
B. fuel oil
C. cooling water
D. cylinder liner
[单项选择]The two most common gases used in pneumatic system are （）
A. compressed air and nitrogen
B. helium and nitrogen
C. oxygen and hydrogen
D. oxygen and acetylene
[单项选择]The most common forms of main drive used on deck auxiliaries are （）.
A. steam plants, electric motors and compressed air
B. diesel engine, hydraulic machinery and compressed air
C. steam plants, electric motors and hydraulic machinery
D. diesel engines, steam plants and hydraulic machinery
[单项选择]Connecting rods in a diesel engine are used to connect the （）.
A. engine to the bed
B. rocker arm to the camshaft
C. crankshaft to the gear train
D. piston to the crankshaft
[单项选择]Diesel oil may be used to cool （） of a diesel engine.
A. cylinders
B. exhaust valves
C. pistons
D. fuel valves
[单项选择]Diesel engine exhaust temperatures may be used to indicate （）.
A. leaking exhaust valves
B. an overloaded cylinder
C. a clogged injector nozzle
D. all of the above
[单项选择]Diesel engine jacket water is used in the distillation process as the （）.
A. coolant for the distillate
B. coolant for the brine cooler
C. means of heating the feedwater
D. primary means of producing a vacuum within the distiller
[单项选择]For most diesel propulsion and generator engines, the over-speed trip device will stop the engine by （）
A. moving the governor control to stop
B. shutting off the lubricating oil supply
C. tripping the governor emergency stop lever
D. shutting off the fuel supply
[单项选择]Fuel oil transfer systems used onboard diesel propelled vessels are required to have （）.
A. two fuel oil transfer pumps provided where one is to be independent of the main engine
B. two fuel oil transfer pumps, with a combined capacity exceeding the maximum consumption of the main engine
C. engine driven transfer pumps and only used in constant speed applications
D. the capacity of the engine driven pump exceed the consumption rate of the engine to which it is attached
[单项选择]Trunk-type diesel engine pistons are most effectively cooled by heat（）
A. conducted through the engine block
B. conducted to water cooled cylinder walls
C. conducted through the piston crown
D. loss to escaping exhaust gases
[单项选择]Cast iron pistons used in large propulsion diesel engines are constructed with （）
A. not taper what so ever
B. the skirt being tapered and smaller than the crown
C. the skirt being tapered and larger than the crown
D. the crown being tapered and smaller than the skirt
[单项选择]Diesel engine exhaust gas temperatures can be used to determine individual cylinder （）.
A. performance
B. horsepower output
C. fuel consumption
D. scavenge effect
[单项选择]On most diesel engines, the governor controls the output speed by （）.
A. controlling the amount of fuel injected into the cylinders
B. varying the speed of the turbocharger
C. adjusting the compression ratio
D. changing the timing of the fuel injection camshaft
[单项选择]The diesel engine valve subjected to most severe conditions of service is the （）.
A. cylinder exhaust valve
B. air starting valve
C. air inlet valve
D. cylinder relief valve
[单项选择]Hydraulic pumps most commonly used in steering systems are of the （）.
A. lobe type
B. screw type
C. axial piston type
D. volute type
[单项选择]Which lubricating oil additive is used in diesel engines to reduce the tendency for sludge and varnish to form on the engine parts?（）
A. Flash point improvers
B. Pour point improvers
C. Inhibitors
D. Foam suppressors
