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[主观题]

All portable fire extinguishers must be capable of being ______.A.carried by hand to a fir

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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更多“All portable fire extinguisher…”相关的问题

第1题

A deck-stowed 40-foot container is giving off smoke，and one end is discolored from heat. T

he cargo is valuable and easily damaged by water. You want to extinguish the fire without further damage if possible. What action should you take？ ______.

A.Connect a portable line from the ship's fixed system and discharge CO2 into the container

B.Flood the container with water and disregard any cargo damage as the fire threatens the entire vessel

C.Pierce the container and discharge 6 or more portable CO2's then add more CO2 hourly

D.Cool the exterior of the container with water and close all vents； then keep it cooled until it can be off-loaded

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第2题

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

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 metals

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第3题

A foam-type portable fire extinguisher is most useful in fighting a fire in ______.A.gener

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 metals

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第4题

A foam-type portable fire extinguisher would be most useful in combating a fire in ______.

A.solid 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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第5题

In order to discharge a CO2 portable fire extinguisher, the operator must FIRST ______.A.i

In order to discharge a CO2 portable fire extinguisher, the operator must FIRST ______.

A.invert the CO2 extinguisher

B.squeeze the two trigger handles together

C.remove the locking pin

D.open the discharge valve

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第6题

A portable dry chemical fire extinguisher discharges by ______.A.gravity when the extingui

A portable dry chemical fire extinguisher discharges by ______.

A.gravity when the extinguisher is turned upside down

B.pressure from a small CO2 cartridge on the extinguisher

C.air pressure from the hand pump attached to the extinguisher

D.pressure from the reaction when water is mixed with the chemical

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第7题

Portable carbon dioxide fire extinguishers should be sent ashore to be rechargedA.when the

Portable carbon dioxide fire extinguishers should be sent ashore to be recharged

A.when the remaining charge volume is less than 90 percent of the required volume

B.at each inspection for certification

C.at each annual inspection

D.when the weight loss exceeds 10% of weight of charge

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第8题

Foam-type portable fire extinguishers are most useful in combating fires involving ______.

A.solid materials such as wood or bales of fiber

B.inflammable liquids

C.electrical equipment

D.metallic solids

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第9题

The required number and type of hand portable fire extinguishers for staterooms on cargo v

essels is ______.

A.one A-I

B.one B-I

C.one C-I

D.none required

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