Pass Benchmark: 70% (21/30) • Standard: USCG NMC / 46 CFR

USCG Safety & Environmental Protection (Deck) (Set 24)

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Question 1 of 30

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Question 1 of 30

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

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30 MCQs

#1 A squeeze-grip type carbon dioxide portable fire extinguisher has been partially discharged. It should be __________. #2 CO2 mainly extinguishes a fire by which of the following? #3 A type B-III CO2 extinguisher has a rated capacity of __________. #4 Which extinguishing agent is most likely to allow reflash as a result of not cooling the fuel below its ignition temperature? #5 You are having a Coast Guard inspection. All carbon dioxide fire extinguishers aboard will be __________. #6 Which statement is TRUE concerning carbon dioxide? #7 Which statement is TRUE concerning carbon dioxide? #8 What is NOT a characteristic of carbon dioxide fire-extinguishing agents? #9 Which portable fire extinguisher should be used on a class C fire on board a vessel? #10 When discharging a portable CO2 fire extinguisher, you should NOT hold the horn of the extinguisher because the horn __________. #11 In order to discharge a CO2 portable fire extinguisher, the operator must FIRST __________. #12 When fighting a fire on a bulkhead using a portable carbon dioxide extinguisher, the stream should be directed at the __________. #13 The extinguishing agent most likely to allow reignition of a fire is __________. #14 Why is carbon dioxide (CO2) better than dry chemical for fighting a class "C" fire? #15 CO2 cylinders must be recharged when the weight of the charge in the cylinder is less than what percent of the stamped full weight of the charge? #16 Which portable fire extinguisher is normally recharged in a shore facility? #17 In continuous operation, the effective range of the 15 pound CO2 extinguisher is limited to __________. #18 To operate a portable CO2 extinguisher continuously in the discharge mode __________. #19 Weight is considered during the periodic required inspection and servicing of __________. #20 Dry chemical extinguishers extinguish class B fires to the greatest extent by __________. #21 Which statement concerning the application of dry chemical powder is FALSE? #22 When dry chemical extinguishers are used to put out class B fires, there is a danger of reflash because dry chemical_________. #23 Dry chemical fire extinguishers are effective on which type(s) of fire? #24 An "ABC" dry chemical fire extinguisher would be LEAST effective against a fire in __________. #25 When must a dry chemical fire extinguisher be recharged? #26 Which advantage does dry chemical have over carbon dioxide (CO2) in firefighting? #27 In addition to weighing the cartridge, which other maintenance is required for a cartridge-operated dry chemical extinguisher? #28 What is an advantage of a dry chemical extinguisher as compared to a carbon dioxide extinguisher? #29 The most effective extinguishing action of dry chemical is __________. #30 Which statement(s) is(are) TRUE concerning the use of dry chemical extinguishers?

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