多普勒领航系统可向飞行员提供（）。

The abbreviation of “Significant Meteorological Information” is （ ） .

Airways are formed by a line connecting one （ ） to another.

DME distance is usually used as （ ） distance unless the aircraft is very close to the station.

“The distance from XX DME” means （ ） .

“Weather phenomenon” means （ ） .

As altitude increases, the temperature of the air （ ） .

The simplest barometer is the （ ） barometer.

“Starboard engine” means （ ） .

“Port engine” means （ ） .

In the flight data recorders the voice recorder tape is “wiped” continuously, so that at any moment the （ ） half hour’s data is stored.