Readback procedure is not a necessity for （ ）.
The pilot should teriminate the readback by（ ）.
If an aircraft readback of clearance or instruction is wrong, the controller shall transmit "（ ）" followed by the corrent version.
When an error is made in a transmission, "（ ）" shall be spoken, the last correct group or phrase repeated and then the correct version transmmitted.
If a correction can be made by repeating the entire message, the operator shall use the phrase "（ ）" before transmitting the message a second time.
The phrase "if not possible advise" may be used together with the clearance or instruction （ ）.
The phrase "unable to comply" is used （ ）.
In radio check , "I read you five" means （ ）.
Which of the following is not a purpose for the establishment of standard phraseology in RTF comnuication?
The ICAO spelling alphabet should be used in treansmitting letters in （ ）.
The sequence of aircraft position report enroute should be （ ）.
During which phase of flight is it not necessary for the controllers to restrain themselves from transmitting to the pilots?
Before lining up, the pilot should switch to tower control （ ）.
At aerodrome with separate Ground and Tower, the aircraft are usually transferred to Tower （ ）.
Before contacting ground control, the pilot usually listens to a recording which includes current airport weather and other information. This information service is often referred to as （ ）.
