Because airplanes are intended to have long lives,their flight safety must be assured
发布于 2021-04-24 16:45:31
【单选题】 A In order to make airplanes have long lives,they are often in good condition B To make airplanes have long lives,itis necessary to ensure their flight safety C Because the long lives of airplanes are required, make sure the mechanics do the maintenance task correctly
