单项选择题

Which of the following item is the cause to the damage of parts and excess wearing?（）

A.overload
B.the odds of the load
C.the default of parts
D.overload and the odds of the load

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During the diesel engine running, the water level of FW...

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The normal color of the exhaust gas of the diesel will ...

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船舶电气与船舶安全

Which of the following item is the cause to the damage of parts and excess wearing?（）