短听力练习-8-15听录音，并选择正确选项
A. UAL has transmitter failure
B. UAL has receiver failure
C. UAL has transponder failure
D. UAL has radar failure
短听力练习-8-16听录音，并选择正确选项
A. Due bird strike
B. Due windscreen problem
C. Due cabin problem
Due control system problem
短听力练习-8-17听录音，并选择正确选项
A. Gears can not be retracted.
B. Gears were jammed.
C. Tyres blew out.
D. Gears blew out.
短听力练习-8-18听录音，并选择正确选项
A. Port engine shut down due to bird strike.
B. Starboard engine shut down due to overheating.
C. Two seagulls broke up the windscreen.
D. Both engines shut down.
微信支付 
支付宝支付