An electrical fire should be put out by dry powder. ()
Inspection of a vessel’s propeller during dry-dock should include ()
A dry-type spark arrestor removes sparks from a diesel engine exhaust by()
The author says that in some hot and dry areas it is advisable to _____.
The medicine () cool, clean and dry.
One disadvantage of using regular dry chemical (sodium bicarbonate) in firefighting is that().
Farming on steep slopes(陡坡) as well as in dry, windy climates ______ particular soil conservation methods.
An advantage of a dry chemical over a carbon dioxide fire extinguisher is its().
It is easier to replace a dry cylinder liner than a wet one because()
Dry cargoes are those commodities that().