【单选题】Safety check is unnecessary when you work in:
【单选题】A check line is ______.
A.
A safety line attached to a man working over the side
B.
Used to measure water depth
C.
Used to slow the headway of a barge
D.
Used to measure the overhead height of a bridge
【简答题】利用________工具可以绘制多边形和星形。
【单选题】Safety check is necessary when you work in:
【多选题】What will be most frequently mentioned during safety check announcement?
【多选题】我国公民基本道德规范的主要内容是A.爱国守法 B.明礼诚信 C.团结友善 D.勤俭自强、敬
A.
我国公民基本道德规范的主要内容是 A.爱国守法
【单选题】Cabin crew check the safety belts ______.
A.
at takeoff, mid-flight and landing
B.
only at takeoff and landing