单项选择题
A.pull the nozzle handle all the way back toward the operator
B.pull the nozzle handle back to a position where the handle is perpendicular to the plane of the nozzle
C.push the nozzle handle forward as far as it will go
D.insert a fog applicator between the fire hose and nozzle
单项选择题 Small quantities of flammable liquids needed at a work site should be（）.
单项选择题 Since the fire is increasing on board the vessel，the Captain orders that the ship be（）.
单项选择题 Shipping society approved buoyant work vests are considered to be items of safety equipment and may be worn by members of the crew（）.