地波传输的特点是（）。

PIL：Request time check; CTL：（ ） .

Pass your （ ） .

CTL：CSN308, here is your ATC clearance, ready to （ ）.

PIL：Tower G-ABCD, radio check 118.7. CTL：Station calling Tower, （ ） unreadable.

CTL：CSN108, （ ） , CSN308, readability 5.

Hong Kong Delivery, CSN308, radio check 124.65, how do you （ ） .

In which case is a controller supposed to say CORRECTION?

Radio check requirement order is （ ） .

The abbreviated call sign of TWA NGPED is （ ） .

In RTF communication, the aircraft call sign 9099X is spoken as （ ） .