短听力练习-8-19听录音,并选择正确选项
A. To restart the engine.
B. To descend to 4,500 m.
C. To divert to the alternate.
D. To maintain the flight level.
短听力练习-8-20听录音,并选择正确选项
A. One passenger on board is in danger.
B. One passenger on board is injured.
C. One passenger on board has a heart attack.
D. There is an unruly passenger on board.
短听力练习-8-21听录音,并选择正确选项
A. bomb on board
B. bomb threat
C. unlawful interference
D. dangerous goods on board
在android中,view的意思是指:( )
A. 视图
B. 界面
C. 风景
D. 实例