單項選擇題Fire extinguishers of sizes III，IV，and V are designated as（）.

A.portable
B.semi-portable
C.fixed
D.disposable


您可能感興趣的試卷

你可能感興趣的試題

1.單項選擇題Fire and abandon ship stations and duties may be found on the（）.

A.crewman's duty list
B.Certificate of Inspection
C.shipping articles
D.muster list

2.單項選擇題Fire alarm system thermostats are actuated by（）.

A.smoke sensors
B.the difference in thermal expansion of two dissimilar metals
C.pressure loss due to air being heated
D.an electric eye which actuates when smoke interferes with the beam

3.單項選擇題Except in rare cases，it is impossible to extinguish a shipboard fire by（）.

A.removing the heat
B.removing the oxygen
C.removing the fuel
D.interrupting the chain reaction

4.單項選擇題Control valves of a CO2 system may be located within the protected space when（）.

A.it is impractical to locate them outside
B.there is also a control valve outside
C.the CO2 cylinders are also in the space
D.an automatic heat-sensing trip is installed

5.單項選擇題CO2 cylinders，which protect the small space in which they are stored must（）.

A.NOT contain more than 200 pounds of CO2
B.be automatically operated by a heat actuator
C.have an audible alarm
D.All of the above