單項(xiàng)選擇題The auxiliary engine and a cgenerator can be connected with （）.
A.cam
B.crosshead
C.bulge
D.coupling
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1.單項(xiàng)選擇題The amount of lubricating oil in the drain tank should be checked by （）.
A.measuring
B.sounding rod
C.metering
D.weighting
2.單項(xiàng)選擇題The abbreviation TDC means （）.
A.top dead center
B.temperature difference center
C.time delay dock
D.top diesel company
3.單項(xiàng)選擇題The abbreviation BDC means （）.
A.Boston Diesel Company
B.base circle diameter
C.switch board case
D.bottom dead center
4.單項(xiàng)選擇題The （） in the injector will lift at a pre-set pressure which ensures that the fuel will atomize once it enters the cylinder.
A.needle valve
B.nozzles
C.piston
D.spring
5.單項(xiàng)選擇題The （） or balance tank collects the re-circulated fuel oil.
A.overflowing
B.sump
C.bilge
D.buffer