單項(xiàng)選擇題A CO2 extinguisher on a ship which has lost 10% of its charge must be（）.

A.used at the earliest opportunity
B.hydrotested
C.recharged
D.weighed again in one month


您可能感興趣的試卷

你可能感興趣的試題

1.單項(xiàng)選擇題A branch line valve of a fire extinguishing system on a ship must be marked with the（）.

A.maximum pressure allowed at that branch
B.name of the space or spaces which it serves
C.date of the last maintenance inspection
D.pressure needed to maintain an effective stream at that point

2.單項(xiàng)選擇題（），as the chemical extinguisher agent，should be used for an electric fire.

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

3.單項(xiàng)選擇題The danger of a charged hose left unattended on deck with the nozzle open is（）.

A.the hose could burst
B.the nozzle end will whip about causing damage or injury
C.water damage to vessel's cargo or structure
D.personnel might trip over the hose

4.單項(xiàng)選擇題No outlet on a fire hydrant may point above the horizontal in order to（）.

A.avoid kinking the hose
B.avoid personal injury during connection
C.make connecting easier
D.prevent spray on electrical equipment

5.單項(xiàng)選擇題Which statement is TRUE concerning spare charges for portable fire extinguishers on unmanned tank barges?（）.

A.Spare charges shall be carried for at least 50 percent of each size and variety required on board
B.If the unit cannot be charged by the vessel's personnel，one spare unit shall be carried in lieu of spare charges
C.Spare charges shall be stowed in watertight containers on deck
D.Regulations concerning spare charges do not apply to unmanned barges