A、melts and must be replaced
B、is enclosed in a tube of insulating material with metal ferrules at each end
C、gives no visual indication of having opened the circuit
D、trips to break the circuit and may be reset
更多“A circuit breaker differs from a fuse in that a circuit breaker （）.”相关的问题
A、prevent main circuit overload B、protect the circuit breaker blowout coil C、prevent alternator motorization D、prevent low voltage tripout
A、melts and must be replaced B、is enclosed in a tube of insulating material with metal ferrules at each end C、gives no visual indication of having opened the circuit D、trips to break the circuit and may be reset
A、can be reset to energize the circuit B、should open the circuit when overloaded C、will burn out when an over current flow develops D、All of the above
A、A.can be reset to energize the circuit B、B.should open the circuit when overloaded C、C.will burn out when an over current flow develops D、D.All of the above
A、time-delay protection B、short-circuit protection C、short duration surge protection D、sustained overload protection
A、the circuit being worked on and the location of all switches and circuit breakers controlling it B、first-aid techniques for treating electrical shock C、cardiopulmonary resuscitation (CPR) D、All of the above
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