单项选择题
The （） is not properly set thus causing either advanced or retarded firing.
A.piston
B.fuel injection pump
C.crankshaft
D.oil can
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相关考题
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The （） engine is used for alternators and some times for main propulsion with a gearbox to provide a propeller of between 90 to 120 rpm.
A.four-stroke
B.two-stroke
C.slow speed
D.reversible -
单项选择题
The （） of the main shaft should be measured with a （）.
A.clearance；calipers
B.sinking；bridge gauge
C.diameter；bridge gauge
D.clearance；lead wire -
单项选择题
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
