单选题One of the purposes for water cooling the exhaust manifold in marine diesel engine is to （）Areduce lube oil temperatureBraise exhaust temperature reduceCexcessive heating of engine roomDreduce load on cooling water pump
单选题
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
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