单选题Fuel oil is thought to be one of the main factors （） the operation and maintenance of an engine.Ahave nothing to do withBhaving nothing to do withChave much to do withDhaving much to do with
单选题
Fuel oil is thought to be one of the main factors （） the operation and maintenance of an engine.
A
have nothing to do with
B
having nothing to do with
C
have much to do with
D
having much to do with
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