VHF机载电台和地面电台具有PTT（Push-To-Talk）开关，松开时处于（）。

When informed by ATC that the aircraft is in radar contact, the pilot should （ ） （ ） position report over compulsory reporting points.

If Delta 12G is given a hand-off to Cleveland center while climbing through 7,500ft to an assigned altitude of 12,000ft, the correct phraseology for the pilot’s initial call-up to centre is （ ） .

A traffic control centre is divided into sectors in order to （ ） .

TWA152, expect straight-in ILS approach, runway 07, QNH1005, report（ ） .

GABCD, （ ） downwind one mile to give room for a departure.

We＇ve got to turn round due to bird strike, engine No.2 is （ ） .

（ ） at minima, overshooting.

We have undercarriage trouble, we＇d like to （ ） .

Takeoff aborted, engine NO.2 was low on （ ） .

We＇ve just been struck by （ ） and we＇ll have to go back the apron to check our electrics.