消防演习与作业题库_消防演习与作业试题_消防演习与作业在线答题_消防演习与作业搜题在线使用拍照解题

单项选择题 How is the external flotation bladder of an immersio...

单项选择题 How does foam extinguish an oil fire?（）.

单项选择题 How do you operate a portable CO2 fire extinguisher...

单项选择题 High-velocity fog（）.

单项选择题 Halon from extinguishers used on a class B fire，sho...

单项选择题 Halon fire extinguishers are NOT effective when used...

单项选择题 Halon extinguishes fire primarily by（）.

单项选择题 Halon extinguishes a fire by（）.

单项选择题 Halon extinguishers used on a class C fire should b...

单项选择题 Good housekeeping on a vessel prevents fires by（）.

单项选择题 Generally，the first action in extinguishing an LFG f...

单项选择题 Gas masks（）.

单项选择题 Fusible-link fire dampers are operated by（）.

单项选择题 Foam-type portable fire extinguishers are most useful...

单项选择题 Foam is a very effective smothering agent and（）.

单项选择题 Foam extinguishes a fire mainly by（）.

单项选择题 Foam extinguishes a fire by（）.

单项选择题 Foam extinguishes a fire by（）.

单项选择题 Flames from small leaks of LFG may be extinguished ...

单项选择题 Flame screens are used to（）.

单项选择题 Fixed CO2 systems would not be used on crew’s qua...

单项选择题 Firefighting foam is only effective when the foam（）...

单项选择题 Fire may be spread by which means?（）.

单项选择题 Fire in an engine compartment is best extinguished w...

单项选择题 Fire hose should be washed with（）.

单项选择题 Fire hose couplings（）.

单项选择题 Fire fighting equipment requirements for a particular...

单项选择题 Fire extinguishing agents used on Class C fires must...

单项选择题 Fire extinguishers on inspected vessels are numbered ...

单项选择题 Fire extinguishers of sizes III，IV，and V are design...

单项选择题 Fire and abandon ship stations and duties may be fo...

单项选择题 Fire alarm system thermostats are actuated by（）.

单项选择题 Except in rare cases，it is impossible to extinguish...

单项选择题 Control valves of a CO2 system may be located with...

单项选择题 CO2 cylinders，which protect the small space in whic...

单项选择题 CO2 cylinders equipped with pressure actuated dischar...

单项选择题 Automatic mechanical ventilation shutdown is required ...

单项选择题 An inflatable liferaft should be lifted back aboard ...

单项选择题 After using a CO2 extinguisher on a ship，it should...

单项选择题 After each reading of an oxygen indicator，the instru...

单项选择题 Actuating the CO2 fixed system causes the shutdown ...

单项选择题 A safety outlet is provided on the CO2 discharge p...

单项选择题 A fire in the galley ALWAYS poses the additional th...

单项选择题 A fire in a ballast pumproom can be brought under ...

单项选择题 A fifteen-pound CO2 extinguisher（）.

单项选择题 Records of tests and inspections of a cargo vessel’...

单项选择题 Accumulations of oily rags should be（）.