飞行程序设计中考虑ILS航向台提供航迹引导时的精度是（）。

The suffix “nimbus”, used in naming clouds, means a （ ） ．

The four families of clouds are （ ） ．

On the high altitude weather chart, the temperature difference between isotherms is （ ） degrees Celsius.

The general characteristics of unstable air are （ ） ．

Clouds, fog, or dew will always form when （ ） ．

What is a characteristic of stable air?

The characteristics of stable air are （ ） ．

（ ） are said to be weather signposts in the sky. They provide a visible indication of the processes occurring in the atmosphere.

If the field elevation is 5,000ft, and the temperature is 14℃, at what altitude will the freezing level (0℃) be encountered?

With a standard surface temperature, estimate the temperature at 10,000ft to be （ ） ．