单项选择题
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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相关考题
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单项选择题
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 -
单项选择题
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 -
单项选择题
Governors are equipped with motors for synchronizing, load sharing and frequency control（）
A.speed setting
B.load setting
C.speed changing
D.load changing
