单项选择题
A.hose rack or reel B.all purpose nozzle C.foam applicator D.pick axe
Each fire hose coupling on a ship must have threads tha...
单项选择题Each fire hose coupling on a ship must have threads that meet the specifications of the（）.
A.American Petroleum Institute B.National Standard Firehose Coupling C.American Society of Mechanical Engineers D.Underwriter's Laboratories，Inc
During the required periodic abandon ship drill aboard ...
单项选择题During the required periodic abandon ship drill aboard a ship，each person not assigned duties in the muster list is（）.
A.instructed in the use of portable fire extinguishers B.shown a video demonstrating lifeboat launching C.instructed in the use of life jackets D.not required to attend the boat drill
During a training exercise a submarine indicating that ...
单项选择题During a training exercise a submarine indicating that a torpedo has been fired will send up smoke from a float. The smoke’s color will be（）.
A.black B.red C.orange D.yellow
