电压互感器的工作原理是什么?
参考答案:
电压互感器实际上是一个降压变压器。只不过容量很小,工作状态接近于变压器的空载情况。电压互感器的工作原理与变压器基本相同。
以扩大的分部分项工程为对象编制的定额是( )。
A.施工定额
B.预算定额
C.概算定额
D.施工机械台班使用定额
An Intranet is (71) the application of Internet technology within an internal or closed user group.Internets are company and not do not have a (72) connection to the Internet.Usedproperly an Internet is highly effective corporate tool,capable of regularly (73) information toempower the workforce with the information needed to perform their roles.Used in this Way,Internet represent a step towards the (74) office.
A.common
B.shared
C.special
D.specific