更多"A fire must be ventilated（）."的相关试题:
[单项选择]When should a fire be ventilated?（）
A. When attacking the fire directly
B. When using a steam smothering system
C. When using the fixed CO2 system
D. All of the above
[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]Portable fire extinguishers must be provided for the cargo tank area of an unmanned tank barge（）.
A. only when fully loaded
B. if one or more tanks are full
C. when transferring cargo
D. only when the barge is being towed
[单项选择]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" fires
[单项选择]The discharge side of every fire pump must be equipped with a（）.
A. gate valve
B. pressure gauge
C. check valve
D. strainer
[单项选择]Each fire hydrant must have at least one spanner and at least one（）.
A. hose rack or reel
B. all purpose nozzle
C. foam applicator
D. pick axe
[单项选择]The fire pumps must be capable of delivering a total quantity of water at a defined head, not less than （） of the total bilge pumping capacity.
A. one-third
B. two-thirds
C. one-fourth
D. two-fourths
[单项选择]The fire drill must, as far as practicable, be conducted if （）.
A. there is a minor emergency
B. there is an actual emergency
C. there were a minor emergency
D. there were an actual emergency
[单项选择]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
[单项选择]For a fire to begin there must be present a combustible material, oxygen or air to （）combustion, and a source of heat at a temperature high enough to start combustion.
A. begin
B. support
C. last
D. extinguish
[单项选择]When must a dry chemical fire extinguisher be recharged?（）
A. After each use
B. When the air temperature exceeds 90°F
C. Every 6 months
D. Every 12 months
[单项选择]On a cargo vessel, fire and boat drills must be held within 24 hours of leaving port if the percentage of the crew replaced is more than （）.
A. 5%
B. 10%
C. 25%
D. 40%
[单项选择]Each fire pump on a ship must have a pressure gauge located at（）.
A. the pump discharge
B. the manifold connection
C. each fire station discharge
D. the pump station
[单项选择]The signal for fire alarm on a ship must be indicated（）.
A. at each alarm bell
B. at each alarm actuator
C. near all exits
D. on the station bill
[单项选择]Each fire pump on a tanker must have a pressure gauge located at（）.
A. the pump discharge
B. the manifold connection
C. each fire station discharge
D. the pump station
[单项选择]Each fire hose coupling on a ship must have threads that meet the specifications of the（）.
A. American Petroleum Institute
B. National Standard Fire hose Coupling
C. American Society of Mechanical Engineers
D. Underwriter's Laboratories，Inc
