单项选择题
A.The supervisor in charge of the dock to which the barge is tied up
B.Part 38 of the Rules and Regulations for Tankers
C.The Certificate of Inspection of the barge
D.The local fire marshal
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?（）
单项选择题 When fighting a fire with a portable dry chemical fire extinguisher，the stream should be directed（）.