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.<br>A:sea cheat<br>B:air receiver<br>C:crankcase<br>D:water box

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

出自：海船船员证

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