更多"（） allows the engine to be placed w"的相关试题:
[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]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]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]The most important factor in engine performance is the actual power output at the end of the crankshaft available for doing workThis is known as （）.
A. indicated horsepower
B. brake horsepower
C. net horsepower
D. friction horsepower
[单项选择]Most often （） is attached to the engine-propeller shaft for efficient electric power generation.
A. a variable-speed AC generator
B. a fixed-speed AC generator
C. an air blower
D. a DC generator
[单项选择]Engine coolant accumulating in the diesel engine lubricating oil can result from a （）
A. low oil pressure
B. high coolant pressure
C. leaking fuel injector
D. cracked cylinder head or liner
[单项选择]Before starting a diesel engine that has an engine driven lube oil pump, the engineer should （）.
A. open the bypass line
B. cut in the lube oil cooler
C. pressurize the lube oil system
D. top off the expansion tank
[单项选择]If the main engine of an unattended engine room shuts down automatically, it will be indicated by an alarm （）.
A. at each control station
B. in the chief engineer’s quarters
C. in the captains quarters
D. All of the above are correct
[单项选择]A diesel engine is similar to a gasoline engine except that the former has no （）.
A. cross-head
B. cylinder
C. connecting rod
D. spark plug
[单项选择]A diesel engine burns （） a gasoline engine of the same capacity in the same period of time.
A. as much fuel as
B. less fuel than
C. less fuel as
D. more fuel than
[单项选择]Before starting an engine by air, the engine must（）
A. be turned by a turning gear for at least one minute
B. be turned by a turning gear for at least two minutes
C. be turned at least one complete turn
D. be turned at least two complete turns
[单项选择]Such an engine frame helps （） the engine and so protect the bearings from the deformation forces transmitted via the ships double bottom.
A. to stiffen
B. to soften
C. to loosen
D. to wear
[单项选择]（） the engines, the diesel engine is（） used engine on board.
A. Between；more commonly
B. Among；the most commonly
C. Between；not more commonly
D. Among；not the most commonly
[单项选择]Chafing gear should be placed（）.
A. at all wearing points of mooring lines
B. at the bitter ends of all standing rigging
C. around running rigging
D. on wire rope only
[单项选择]A single vertical magnet placed underneath the compass in the binnacle is used to compensate for（）.
A. the horizontal component of the permanent magnetism
B. deviation caused by the vessel's inclination from the vertical
C. induced magnetism in the horizontal soft iron
D. induced magnetism in the vertical soft iron
[单项选择]The joint formed when two steel plates are placed end-to-end is called a（）.
A. bevel
B. seam
C. butt
D. bond
[单项选择]A portable foam fire extinguisher is placed in operation by（）
A. turning it upside down
B. pressing the foam lever
C. squeezing the grip handle
D. opening the hose valve
[单项选择]A water jacket is placed around the exhaust manifolds of propulsion diesel engines to（）
A. reduce heat radiation to the engine room
B. aid in preventing turbocharger overheating
C. condense and drain moisture from exhaust gases
D. dampen exhaust gas pulsations in the manifold
[单项选择]Magnets are placed in horizontal trays in the compass binnacle to compensate for the（）.
A. induced magnetism in the vessel's horizontal soft iron
B. change in the magnetic field when the vessel inclines from vertical
C. permanent magnetism of the vessel
D. magnetic fields caused by electrical currents in the vicinity
