更多"Everything（）if Albert hadn't called"的相关试题:
[单项选择]Everything（）if Albert hadn't called the fire brigade.
A. had been destroyed
B. was destroyed
C. would be destroyed
D. would have been destroyed
[单项选择]Everything （）if Albert hadn't called the fire brigade.
A. will be destroyed
B. will have been destroyed
C. would bedestroyed
D. would have been destroyed
[单项选择]The canvas covering of fire hose is called the（）.
A. casing
B. outer hose
C. line cover
D. jacket
[单项选择]A fire main system must have enough fire hydrants so that each accessible space may be sprayed with（）.
A. a low velocity spray applicator
B. a water spray or solid stream
C. at least two spray patterns of water
D. at least 25 psi delivered pressure
[单项选择]When two fire hose teams are attacking a fire they should（）.
A. use different fire hose pressures
B. use fire hoses of different sizes
C. not attack the fire from opposite sides
D. not wear protective clothing
[单项选择]Fire dampers prevent the fire spreading through the process of （）.
A. convection
B. conduction
C. radiation
D. direct contact
[单项选择]The fire of sodium is classified as（） fire.
A. Class A
B. Class B
C. Class C
D. Class D
[单项选择]On a class “B” fire，which portable fire extinguisher would be the LEAST desirable?（）
A. Carbon dioxide
B. Water (stored pressure)
C. Dry chemical
D. Foam
[单项选择]The basic training in fire prevention and fire fighting should include the practical elements which should allow the trainees to acquire the ability to （）.
A. use self-contained breathing apparatus
B. use various types of portable fire extinguishers
C. effect a rescue in a smoke-filled space wearing breathing apparatus
D. All of the above
[单项选择]On a class B fire，which portable fire extinguisher would be the LEAST desirable?（）
A. Carbon dioxide
B. Water (stored pressure)
C. Dry chemical
D. Foam
[单项选择]Fire dampers prevent the spread of fire by（）.
A. convection
B. conduction
C. radiation
D. direct contact
[单项选择]The fire of burning paper is classified as（）fire.
A. Class A
B. Class B
C. Class C
D. Class D
[单项选择]The fire of fuel oil is classified as（） fire.
A. Class A
B. Class B
C. Class C
D. Class D
[单项选择]An engine compartment gasoline fire requires which type of extinguisher?（）.
A. Carbon dioxide
B. Dry chemical
C. Foam
D. All of the above
[单项选择]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
