單項(xiàng)選擇題

The wooden plug inserted in the vent of a damaged tank of a ship should be removed in case it is decided to（）.

A.pump from the damaged tank
B.fight a fire
C.abandon the rig
D.use the crossover system

你可能感興趣的試題

The ventilation system of your ship has fire dampers restrained by fusible links. Which statement is TRUE?（）

A.A fusible link will automatically open after a fire is extinguished and reset the damper
B.Fusible links must be replaced at every inspection for certification
C.Fusible links are tested by applying a source of heat to them
D.Fusible links must be replaced if a damper is activated

單項(xiàng)選擇題

The type of extinguisher which should be used for an electricity fire is（）.

A.foam or soda acid
B.dry chemical or foam
C.carbon dioxide or dry chemical
D.carbon dioxide or foam