基线转弯（修正角）程序出航时间的规定为（）分钟，以（）分钟为增量

If, at any time, the pilot is given an instruction that is beyond his airplane＇s capabilities or is not safe to follow, which of the following practices is not right?

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.