half the resistance of the other resistor
a resistance equal to the other
at least ten times the resistance of the other
a partial short circuit
第1题:
A circuit breaker and a fuse have a basic similarity(类似) in that they both ______.
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.should short the circuit when overloaded
第2题:
A circuit breaker differs from a fuse in that a circuit breaker ______.
A.melts and must be replaced
B.is enclosed in a tube of insulating material with metal ferrules(环) at each end
C.gives no visual indication of having opened the circuit
D.trips to break the circuit and may be reset
第3题:
What can be said about the experiments at Rocky Mountain Arsenal?
A) They have no practical value in earthquake prevention.
B) They may have practical value in earthquake prevention.
C) They are certain to have practical value in earthquake prevention.
D) The article does not say anything about their practical value in earthquake prevention.
第4题:
On an ONS 15454 node you can tunnel a(n) ().
第5题:
第6题:
A circuit breaker and a fuse have a basic similarity in that they both______.
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.should short the circuit when overloaded
第7题:
第8题:
A.CiscoCatalyst2900Series,Catalyst7300Series,andCatalyst8000Series
B.CiscoCatalyst2900Series,Catalyst3700Series,andCatalystSeries
C.CiscoCatalyst2700Series,Catalyst7300Series,andCatalyst8000Series
D.CiscoCatalyst2700Series,Catalyst3700Series,andCatalyst4500Series
第9题:
Which three are optional extensions of the Frame Relay Local Management Interface specification?()
第10题:
活性污泥的比耗氧速率(SOUR)