A light,feathery deposit of ice caused by the sublimation of water vapor directly into the crystalline form,on objects whose temperatures are below freezing,is called().
____
______ to flow spontaneously from a block of ice to a surrounding volume of water, this could occur in complete accord with energy conservation.
I still remember the winter()we went to Harbin to see the ice-lamp.
What form of ice is of land origin?()
An icebreaker assisting a vessel through an ice field would display a visual signal consisting of the code letter “E” (Echo) to signify that “()”.
The proximity of pack ice may be indicated by().
There is a possibility that small vessel,ice and other floating objects may not be()by radar at an adequate range.
Before entering an ice area,the ship should be().
()by an ice-breaker, it is important to maintain a continuous listening watch on the appropriate VHF channel and to maintain a proper look-out for sound and visual signals.