【多选题】若发现电压互感器有异常情况时,应采用下列方法尽快将该电压互感器进行隔离()。
A.
如确认互感器高压保险已熔断,则可直接拉开隔离开关进行隔离
C.
用开关切断该电压互感器所在母线的电源,然后隔离故障的电压互感器
【单选题】用隔离开关可以拉合()的电压互感器和避雷器。
【简答题】The cost maybe lower than we firstthought, but ____________( in case ) itwill still be substantial.
【单选题】建立管理信息系统时使用的投资效果系数应()
【多选题】允许使用刀闸进行下列操作()。
B.
10kV户外三联隔离开关可拉开、合上电压在10kV及以下,电流在9A以下的负荷电流
C.
10kV单相隔离开关可拉开、合上励磁电流不超过2A的空载变压器
【单选题】I have a plan that will raise wages, lower prices, increase the nation's stock of scientists and engineers, and maybe even create the next Google. Better yet, this plan won't cost the government a dim...
A.
Immigration is an economic policy as well as a politic policy.
B.
Immigration will raise wages for the average native-born worker.
C.
Immigration helps the economy and most American workers.
D.
Immigration policy should be primarily oriented around the national goals.
【判断题】可以用隔离开关或高压熔断器拉开有故障(油位异常升高、喷油、冒烟、内部放电等)的电压互感器。