单项选择题
If a crankcase explosion occurs in a diesel engine, which of the listed actions should be taken?（）
A.Open the crankcase immediately to check for damage
B.Apply fire fighting water through the crankcase breather
C.Allow the engine to cool before opening the crankcase
D.Assume that there is no damage to the crankshaft
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If the turbocharger of a four-stroke/cycle diesel engine fails to operate, which of the following statements best describes the probable effect?（）
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