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

USCG Safety & Environmental Protection (Deck) (Set 23)

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Question 1 of 30

The BEST method of applying foam to a fire is to __________.

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30 MCQs

#1 The BEST method of applying foam to a fire is to __________. #2 Portable foam fire-extinguishers are designed for use on class __________. #3 A portable foam (stored-pressure type) fire extinguisher would be most useful in combating a fire in __________. #4 Foam extinguishes a fire mainly by __________. #5 How does foam extinguish an oil fire? #6 Firefighting foam is only effective when the foam __________. #7 Foam extinguishes a fire by __________. #8 Which statement about firefighting foam is TRUE? #9 Which statement is TRUE about fire fighting foam? #10 A foam-type portable fire extinguisher would be most useful in combating a fire in __________. #11 Portable-foam fire extinguishers are designed for use on what classes of fires? #12 Regular foam can be used on all but which flammable liquid? #13 Which type of fire is the foam (stored-pressure type) fire extinguisher effective on? #14 In the production of chemical foam by a continuous-type generator __________. #15 When water pressure of 100 psi is used in conjunction with an inline proportioner for the production of the mechanical foam, a 5-gallon can of liquid foam will last __________. #16 Production of mechanical foam by a portable in-line foam proportioner __________. #17 Compared to the amount of concentrated foam liquid used, the amount of low expansion mechanical foam produced is __________. #18 One gallon of low expansion foam solution will produce about __________. #19 One gallon of high expansion foam solution will produce __________. #20 Your tankship has 40 gallons of 6% foam concentrate aboard. Approximately how much foam solution can be produced from this supply? #21 When compared to low-expansion foam, a high-expansion foam will __________. #22 When compared to a high-expansion foam, a low-expansion foam will __________. #23 When compared to low-expansion foam, a high-expansion foam will __________. #24 Extra chemicals for producing chemical foam should be stored __________. #25 Foam is a very effective smothering agent and __________. #26 One of the limitations of foam as an extinguishing agent is that foam __________. #27 Semi-portable extinguishers used on inspected vessels are sizes __________. #28 How do you operate a portable CO2 fire extinguisher? #29 When used to fight fire, carbon dioxide __________. #30 In weighing CO2 cylinders, they must be recharged if weight loss exceeds __________.

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