相关题目
Drizzle, rain, snow, hail, ice pellets, and ice crystals are all forms of （ ） ．
The presence of ice pellets at the surface is evidence that （ ） ．
Every physical process of weather is accompanied by or is the result of a （ ） ．
Water vapor is removed from the atmosphere by the process of （ ） ．
Water vapor is added to the atmosphere by the process of （ ） ．
Water is present in the atmosphere in three states. Which word below is not used to define the states of water?
Clouds, fog, or dew always form when water vapor （ ） ．
The amount of moisture the air can hold depends on air temperature （ ） is the temperature at which air becomes saturated.
The wake separation criterion between the preceding medium aircraft and the light aircraft behind is（ ）.
The reverse process of freezing is （ ）. It is the change of ice to water.
