A.have a design burst pressure of at least 25 psig
B.be capable of withstanding at least 2.0 psi vacuum without collapsing or constricting
C.be electrically continuous with a maximum resistance of ten thousand ohms
D.All of the above
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A.six weeks
B.six months
C.twelve months
D.two years
A.the name of the unit on which it is located
B.the date that it was installed on the unit
C.the names of the individuals qualified to use it
D.an identification number different from other extinguishers on the unit
A.the pump discharge
B.the manifold connection
C.each fire station discharge
D.the pump station
A.American Petroleum Institute
B.National Standard Fire hose Coupling
C.American Society of Mechanical Engineers
D.Underwriter's Laboratories，Inc
A.week
B.two weeks
C.month
D.two months
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