A fire starts when the following （） factors come together.
A . combustible material
B . ignition source
C . oxygen
D . A and B and C
相似题目
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When start a screw pump, the by pass valve should be （）.
A . closed
B . opened fully
C . cracked open
D . partly ope
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When approaching a fire from win ward, you should shield firefighters from the fire by using（）
A . low-velocity fog
B . high-velocity fog
C . a straight stream of water
D . foam spray
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Which of the following statements is true concerning carbon dioxide when used as a fire extinguishing agent?（）
A . Carbon dioxide is corrosive when exposed to fire
B . Carbon dioxide should be applied slowly to a large engine room fire
C . Its total cooling effect is far greater than water
D . Its smothering effect is excellent for class B fire
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If a scavenge fire starts, the engine must be put to “（）” and the fuel must be taken off the cylinders affected by the fire.
A . stop engine
B . finished with engine
C . dead slow ahead
D . dead slow aster
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When using carbon dioxide to fight a fire on a bulkhead，the CO2 should be applied（）.
A . first to the bottom of the flaming area，sweeping from side to side，and following the flames upward
B . in a circular motion from the middle of the bulkhead outward
C . to the top of the flaming area，sweeping from side to side，and working toward the bottom
D . in an up-and-down motion from one side of the bulkhead to the other
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When starting a reciprocating pump, the inlet valve should be （）.
A . closed
B . opened fully
C . cracked open
D . partly ope
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Which of the following statements represents the correct action to take when three crew members discover a fire?（）
A . One man report the fire, and the other two men fight the fire
B . One man report the fire, one man fight the fire, and one man evacuate and secure the area
C . One man report the fire, one man fight the fire, and one man act as a safety observer
D . All three men fight the fire and report it immediately after it is extinguished
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When possible，what should be the FIRST step in combating a fire on deck resulting from a cargo overflow or a leaking cargo line?（）
A . Blanket the cargo spill with foam
B . Prevent the spread of fire with a foam dam
C . Apply CO
on burning fuel at its source
D . Shut off the transfer of cargo
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When attempting to start a main propulsion diesel engine, the engine, the engine turns at the proper speed but will not startYou should check the（）
A . starting air pressure
B . scavenge air pressure
C . over-speed trip
D . banjo oiler line
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If a diesel engine rotates slowly when cranked, but does not fire, the（）
A . fuel control rack had admitted excessive fuel
B . engine speed does not match the fuel rack setting
C . engine has failed to reach its firing speed
D . starter pinion and ring gear contact is not correct
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When there is a flame failure in an automatically fired auxiliary boiler, the （）.
A . air supply is shut off
B . fuel supply is shut off
C . water supply is shut off
D . safety valve lift
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The most likely place for a fire to start through the process of spontaneous combustion is in （）.
A . an electrical switchboard
B . the pressure tanks
C . the fuel oil tanks
D . the oily rag bi
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Which feature is enabled when you start a WebLogic server with the ¨CDserverType=wlx option?（）
A . JDBC
B . JCA
C . JMS
D . EJB
E . Java EE
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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-ignitio
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When starting a centrifugal pump, the discharge valve should be （）.
A . closed
B . opened fully
C . cracked open
D . partly ope
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When there is a fire in a large electric motor, normally the very FIRST step is to （）
A . secure the electric supply
B . ventilate area to remove smoke
C . start the fire pump and lead out hose
D . apply foam
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A fire hose with a nozzle attached must be connected to each hydrant except when exposed to heavy weather or when the（）.
A . fire hose might be damaged by cargo operations
B . vessel is in port
C . fire-main system is not charged
D . fire pumps are used for purposes other than supplying water to the fire mai
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What does the term head mean when applied to a fire pump?（）
A . Length of the discharge pipe
B . Height of the discharge pipe
C . Difference between the discharge and suction pressures
D . Sum of discharge and suction pressure
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When a vessel signals her distress by means of a gun or other explosive signal，the firing should be at intervals of approximately（）.
A . 10 minutes
B . 1 minute
C . 1 hour
D . 3 minute
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Start-Up Diagnostics are a diagnostic routine that regularly operate automatically when the CNC is switched on.
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When there is no more room or openings for promotions or transfers in a company, the employee will be fired.
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When preparing for a speech, writing an outline is just a waste of time. We should start to write the beginning immediately.
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Start-Up Diagnostics are a diagnostic routine that regularly operate automatically when the CNC is switched on.
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请找出下列句子中需要首字母大写的单词并将正确答案填入空中。 Just as an alarm started ringing, Cindy came out of the building shouting, “help! There’s a fire in the barn!”
