A complete detailed inspection and adjustment of the valve mechanism will be made at the first 25 hours after the engine has been placed in service.Subsequent inspections of the valve mechanism will be made each second 50-hour period.From the above statement, at what intervals will valve mechanism inspections be performed?

发布于 2021-02-17 16:39:41
【单选题】
A 100 hours.
B 50 hours.
C 125 hours.

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