In a series circuit, which value will remain unchanged at all places in the circuit?()
Inductance is the property of an electric circuit that ()
在MGW上支持电路仿真(Circuit Emulation)的板子是().
一回路 primary circuit
SELV只作为接地系统的电击保护。
二回路 secondary coolant circuit
VC(Virtual Circuit)虚电路
Main engine room control console alarms are to be of the self monitoring type, meaning that an open circuit to a particular alarm circuit will ()
The total power consumed in a parallel circuit is ()
IC(Integrated Circuit)卡是1970年由()Roland Moreno发明的。
In motorships,there are two main circuits, ().
Electric circuits are protected against overloads and short circuits by means of a/an ().
PVC(Permanent Virtual Circuit)永久虚电路
You are provisioning a DS-1 circuit on an ONS 15454 2F-BLSR with a XC-10G card. Each VT1.5 connection must also terminate via the STS matrix. On the originating circuit node, how many STS ports are now available for VT1.5 circuits?()
GIS就地控制屏上发“跳闸回路A/B闭锁(TRIP CIRCUIT A/B BLOCKED)”报警的原因有哪些?
安全超低电压(SELV)和功能超低电压(PELV)的标称电压为()。
A transformer in an electric circuit serves to ()
设备的防触电保护依靠特低电压(SELV)供电,且设备内可能出现的电压不会高于特低电压。该类设备是从电源方面就保证了安全。该类设备不得具有保护接地手段。该类设备属于()设备。
直接接触和间接接触两者兼有的电击防护宜采用安全超低压(SELV)和功能超低压的(PELV)保护方法来实现,SELV和PELV的电源采用()。
You are provisioning an E-1 circuit on an ONS 15454 MS-SPRing configuration and XC-VXL-10G card. Each VC-12 connection must also terminate via the VC-3 matrix. How many VC-3 ports remain after this circuit is created, assuming no other circuits?()
short circuit
integrated circuits的中文释义为“集成电路”()
128、根据《建设工程施工现场供用电安全规范》(GB 50194-2014)规定,行灯应采用Ⅲ类灯具,采用安全特低电压系统(SELV),其额定电压值不应超过()V。
根据GB50054-2011《低压配电设计规范》,SELV系统和PELV系统的安全隔离变压器或电动发电机等移动式安全电源,应达到类设备或与Ⅱ类设备等效绝缘的防护要求。(GB50054-2011,5.3.4)()