更多"If there has been a fire in a close"的相关试题:
[单项选择]After a fire has been extinguished in a closed space, personnel may safely enter the space when （）.
A. smoke density has been decreased sufficiently to see the bulkhead opposite the compartments entrance
B. a lifeline and explosion proof flash light are used
C. all smoke and toxic fumes are removed and an adequate oxygen supply is present
D. overhaul has been completed to remove any possible source of re-ignition
[单项选择]When an oil fire has been extinguished, the surface of the oil should be kept covered with foam to prevent （）.
A. air from contacting the oil vapors
B. permitting re-ignition boiling of the heated oil
C. spontaneous combustion below the oil surface
D. toxic fumes from escaping to the surface
[单项选择]A tank has been sealed and unventilated for a long period of timeWhich of the following conditions does this indicate?（）
A. The tank is safe to enter
B. The tank is especially dangerous to enter
C. Carbon monoxide is present
D. Water vapor present when the tank was sealed has oxidized
[单项选择]A carbon dioxide fire extinguisher has been partially discharged, and should be immediately （）.
A. tagged and restowed properly in its rack
B. weighed and the charge loss recorded
C. given to the chief engineer for recharging
D. tagged "empty" and stowed separately from charged extinguishers
[单项选择]A fire has damaged 20 bales of cotton on a freighter loaded with general cargo. This claim would come under（）.
A. constructive total loss
B. general average
C. particular average
D. total loss of a part
[单项选择]A fire has broken out on the stern of your vessel. You should maneuver your vessel so the wind （）.
A. comes over the bow
B. blows the fire back toward the vessel
C. comes over the stern
D. comes over either beam
[单项选择]A vessel has been damaged by fire. The survey shows the cost of repairs will exceed the value of the repaired vessel. This is an example of a(n)（）.
A. constructive total loss
B. salvage loss
C. actual loss
D. preferred loss
[单项选择]A fire hose has a（）.
A. male coupling at both ends
B. female coupling at both ends
C. female coupling at the nozzle end and a male coupling at the hydrant end
D. male coupling at the nozzle end and a female coupling at the hydrant end
[单项选择]Your ARPA has been tracking a target and has generated the targets course and speed.The radar did not receive a target echo on its last two scans due to the weather.What should you expect under these circumstances（）.
A. The ARPA will generate data as if the target was still being tracked by radar
B. The ARPA will give an audible and/or visual lost target alarm
C. The ARPA will generate data based on sea return echoes from the vicinity where the target was lost
D. The ARPA has lost all memory of the target and must recompute the target data
[单项选择]Which fire extinguishing agent has the greatest capacity for absorbing heat?（）
A. Water
B. Foam
C. Dry chemical
D. Carbon Dioxide
[单项选择]Which fire fighting agent has the greatest capacity for absorbing heat?（）
A. water
B. dry chemical
C. foam
D. CO2
[单项选择]Carbon dioxide as a fire fighting agent has which advantage over other agents? （）
A. It causes minimal damage
B. It is safer for personnel
C. It is cheaper
D. It is most effective on a per unit basis
[单项选择]The ventilation system of your ship has fire dampers restrained by fusible links. Which statement is TRUE? （）
A. Fusible links must be replaced if a damper is activated
B. Fusible links are tested by applying a source of heat to them
C. Fusible links must be replaced at every inspection for certification
D. A fusible link will automatically open after a fire is extinguished and reset the damper
