One of the purposes for water cooling the exhaust manifold in marine diesel engine is to （）<br>A:reduce lube oil temperature<br>B:raise exhaust temperature reduce<br>C:excessive heating of engine room<br>D:reduce load on cooling water pump

One of the purposes for water cooling the exhaust manifold in marine diesel engine is to （）
A:reduce lube oil temperature
B:raise exhaust temperature reduce
C:excessive heating of engine room
D:reduce load on cooling water pump

出自：海船船员证

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