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單項選擇題

If a crankcase explosion has occurred in a diesel engine, and the crankcase remains intact, which of following precautions should be observed?()

A.The cylinder indicator cocks should be opened
B.The sump lube oil scavenge pump should be secured immediately
C.The explosion relief valves should be manually opened
D.The crankcase should remain unopened until the engine has cooled

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