A.Single bus has only one power source while dual bus has two independent power sources

B.Single bus is more flexible and adaptable to changing needs than dual bus

C.Single bus is more reliable than dual bus

D.Dual bus is more cost-effective than single bus

A.72 hours

B.96 hours

C.24 hours

D.48 hours

A.85 degrees

B.70 degrees

C.80 degrees

D.75 degrees

E.77 degrees

A.6"

B.3"

C.12"

D.9"

A.circulation and support equipment

B.principal loads

C.computer

D.electrical equipments

E.redistribution systems

F.all of above