飞行中发现飞机非指令的时而左滚,时而右滚,同时伴随机头时而左偏,时而右偏的现象,此迹象表明()
A.飞机进入了飘摆(荷兰滚)
B.飞机进入了失速
C.飞机进入了螺旋
参考答案:A
.
_______from the operation, the patient was advised to stay in hospital for another two weeks.
A.Having not fully recovered
B.Being not fully recovered
C.Not having fully recovered
D.Not fully recovering
有48枝铅笔,平均装在5个铅笔盒里,每盒装几枝,还剩几枝?