Portable CO2 fire extinguishers should NOT be used to inert a space containing flammable liquids due to the danger of（）.

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• How do you operate a portable CO2 fire extinguisher?（）.

  A . Point the horn down B . Turn cylinder upside-down C . Break the rupture disc D . Pull pin，squeeze gri

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• All portable fire extinguishers must be capable of being（）.

  A . carried by hand to a fire B . carried or rolled to a fire C . recharged in the field D . used on class "B" fire

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• Portable foam type fire extinguishers are most effective on（）.

  A . mattress fires B . oil fires C . wood fires D . All of the above

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• Foam-type portable fire extinguishers are most useful in combating fires involving（）.

  A . solid materials such as wood or bales of fiber B . flammable liquids C . electrical equipment D . metallic solid

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• In order to discharge a C02 portable fire extinguisher , the operator must first（）.

  A . invert the CO extinguisher B . squeeze the two trigger handles together C . remove the locking pin D . open the discharge valve

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• A portable foam (stored-pressure type) fire extinguisher would be most useful in combating a fire in（）.

  A . generators B . oil drums C . the bridge controls D . combustible metal

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• Foam-type portable fire extinguishers are more usefull in combating fires involving（）.

  A . solid materials such as wood or bales of fiber B . inflammable liquids C . electrical equipment D . metallic solid

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• Which is the proper method of determining whether a portable CO2 fire extinguisher needs recharging?（）

  A . Check the tag to see when the extinguisher was last charged B . Release a small amount of CO ; if the CO discharges，the extinguisher is acceptable C . Weigh the extinguisher and compare the weight against that stamped on the valve D . Recharge the extinguisher at least once each year

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• Each hand portable，semi-portable and fixed fire extinguishing unit on a ship must be tested and inspected at least once every（）.

  A . six weeks B . six months C . twelve months D . two year

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• A CO2 portable extinguisher is annually checked by（）.

  A . reading the gage pressure B . weighing the extinguisher C . discharging a small amount of CO D . seeing if the seal has been broke

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• Which portable fire extinguisher is normally recharged in a shore facility?（）

  A . Dry chemical (cartridge-operated) B . Water (cartridge-operated) C . Water (pump tank) D . Carbon dioxide

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• Each hand portable fire extinguisher on a ship must be marked with（）.

  A . the name of the unit on which it is located B . the date that it was installed on the unit C . the names of the individuals qualified to use it D . an identification number different from other extinguishers on the unit

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• A portable foam fire extinguisher is placed in operation by（）

  A . turning it upside down B . pressing the foam lever C . squeezing the grip handle D . opening the hose valve

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• A foam-type portable fire extinguisher would be most useful in combating a fire in（）.

  A . soild materials such as wood or bales of fiber B . flammable liquids C . a piece of electrical equipment D . combustible metallic solid

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• How do you operate a portable C02 fire extinguisher?（）.

  A . Point the horn down B . Turn cylinder upside-down C . Break the rupture disc D . Pull pin, squeeze gri

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• A foam-type portable fire extinguisher is most useful in fighting a fire in（）.

  A . generators B . oil drums C . the bridge controls D . combustible metal

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• Each hand portable fire extinguisher must be marked with（）.

  A . the name of the vessel on which it is located B . the date that it was installed C . the names of the individuals qualified to use it D . an identification number

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• Which portable fire extinguisher should be used on a class C fire on board a vessel?（）

  A . Carbon dioxide B . Water (stored pressure) C . Foam D . Carbon tetrachloride

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• A squeeze-grip type carbon dioxide portable fire extinguisher has been partially discharged.It should be ______.

  A.replaced in its proper location if weight loss is no more than 15% B.replaced in its proper location if weight loss is no more than 25% C.labeled empty and recharged as soon as possible D.labeled empty and replaced in its proper location regardless of weight

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• Each hand portable fire extinguisher on M/V Utopia must be marked with______．

  A.the date that it was installed on the unit B.the names of the individuals qualified to use it C.the name of the unit on which it is located D.an identification number different from other extinguishers on the unit

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