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單項選擇題The oil sump, a light welded design, is mounted on the engine block from below and sealed by （）

A.O-ring
B.gasket
C.washer
D.packing

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1.單項選擇題The air required for combustion is taken from the engine room through a filter fitted on the turbochargerThis reduces the risk for too and contamination of the combustion air（）

A.high temperatures
B.low temperatures
C.wet
D.dirty

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2.單項選擇題Engines, which are to be run in parallel have governors specially adapted for the same（）, about 4% to obtain basic load sharing.

A.speed settings
B.speed droops
C.speed drops
D.speed changes

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3.單項選擇題Governors are equipped with motors for synchronizing, load sharing and frequency control（）

A.speed setting
B.load setting
C.speed changing
D.load changing

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4.單項選擇題In engines with system, the lubricating oil can be added to the engine through the filling hole in the crankcase cover, by using a hand oil can, or through the separator pipe（）

A.lubricating oil
B.dry sump
C.circulated tank
D.wet sump

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5.單項選擇題Main engines as well as auxiliary engines operating on heavy fuel should have continuous on the lubricating oil, either according to the bypass or batch principles（）

A.filtering
B.centrifuging
C.depositing
D.operating

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