单选题动力装置的平均寿命用平均无故障时间来表示，而机舱里产品（）。A全部是可修的B基本是不可修的C多数不可修D少数不可修
单选题
动力装置的平均寿命用平均无故障时间来表示，而机舱里产品（）。
A
全部是可修的
B
基本是不可修的
C
多数不可修
D
少数不可修
参考解析
解析：
暂无解析
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