三相对称负载是指____。
B
暂无解析
在纯电感性负载的交流电路中，u＝1102sin（ωｔ＋30°）Ｖ，ｉ＝52sin（ωｔ－60°）Ａ，电路的无功功率为________Ｖ
在交流电路中，若连接负载的中线电流为0，则该电路的连接方式为_______。
What is Bill going to do?
John got beaten in the game,____ had been expected.
The city government has determined to get _____ with people who try to escape payingtaxes.
Lance:Mary doesn't look well.
Lee:______.
Where will the meeting take place?
Sometimes a bus ____ gets on the bus to check the tickets.
What makes a meeting effective?
_____ this has happened on occasion, this is the exception and definitely not the rule .
Last Friday I saw some boys ______ behind Daniel, _____ the computer games.
Gene: Shall I open this window?
Jodie: ______