单选题Lubricating oil for an engine is stored at the bottom of the （）, known as the sump or in a drain tank located beneath the engine.Asea cheatBair receiverCcrankcaseDwater box
单选题
Lubricating oil for an engine is stored at the bottom of the （）, known as the sump or in a drain tank located beneath the engine.
A
sea cheat
B
air receiver
C
crankcase
D
water box
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