[单选题]汽车维修机具设备维护作业的主要内容有 [ ]

A、年度维护、季度维护、月度维护
B、全员维护、班组维护、专人维护
C、日常维护、一级维护、二级维护
D、一级维护、二级维护、三级维护

参考答案： C

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