The construction of the main propulsion engine lube oil sump should （）<br>A:have no plating joints of 90<br>B:retain the lube oil as long as possible before it recirculates through the system<br>C:provided drain/return lines that are no greater than 24 inches from the pump suction<br>D:be provided with only a perfectly horizontal bottom

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

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