在有RA干扰飞机操作环境时，使用TA方式的有（）。

The prescribed standard turn slope in a holding procedure is （ ） degrees.

The spread of long wave and medium wave is mainly in the form of （ ） .

The communication frequency for VOR is between （ ） .

Area navigation system has （ ） operational capabilities.

The farthest distance the weather radar can detect is （ ） miles.

At the landing phase, to avoid the wake turbulence of preceding aircraft, the succeeding aircraft should （ ） .

The numbering of domestic regional air lines falls into two categories: （ ） used between the flight control regions, and （ ） used within the flight control regions.

（ ） can be started up when flying in the air.

Overloading refers to （ ） .

Code （ ） is available for provisional use by relevant control units.