单项选择题
A.threads are lubricated
B.nozzle is attached to the hose
C.female coupling has a gasket
D.hose is led out
单项选择题 When inspecting a tank barge to see that it has all the required fire extinguishers and other safety items aboard，which of the following is the best source for determining what is required?（）
单项选择题 When fire pumps are used for other than firefighting service，each pipe connecting the other service (except for branch lines used for deck washing) must have a（）.
单项选择题 When fighting an oil or gasoline fire in the bilge，which of the following should NOT be used?（）