等待程序的出航时间规定，4250m（14000ft）以下为（）分钟，4250m以上为（）分钟。

When establishing communications, （ ） ．

A radio that combines a transmitter and receiver in one unit is called a （ ） ．

Which statement below is not true?

The identification markings of civil aircraft include （ ） ．

The phrase “go ahead” means “（ ）”．

A radio transmitter is activated when the （ ） ．

In radiotelephony, the call sign for a controller for （ ） is Ground．

The most significant limitation of VHF signals is that they （ ） ．

Aircraft with a flight range greater than （ ） km are long-range aircraft.

When transmitting time, 09:16 can be given as （ ） ．