单项选择题
The spread of fire is prevented by（）.
A.cooling surfaces adjacent to the fire B.leaving combustibles in the endangered area C.increasing the oxygen supply D.All of the above
单项选择题 The spread of fire is NOT prevented by（）.
单项选择题 The remote control for a fixed fire extinguishing system should be（）.
单项选择题 The record of tests and inspection of fire fighting equipment on board a ship must include（）.
