例句與造句

1. During the 1960s, Boeing introduced the flaps and all engines operating, and at approach flap setting and one engine inoperative, respectively.
2. It recommended that the FAA require flight testing of the Jetstream 31 " in those cruise and approach flap configurations in which extensive exposure to icing conditions can be expected, and require subsequent changes in configuration to include landing flaps ."
3. It's difficult to find approach flap in a sentence. 用approach flap造句挺難的