The construction of the main propulsion engine lube oil sump should .A.have no plating joi

The construction of the main propulsion engine lube oil sump should .

A.have no plating joints of 90

B.retain the lube oil as long as possible before it recirculates through the system

C.provided drain/return lines that are no greater than 24 inches from the pump suction

D.be provided with only a perfectly horizontal bottom

请帮忙给出正确答案和分析，谢谢！

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