在任意三相电路中,()。
A、三个相电压的相量和必为零
B、三个线电压的相量和必为零
C、三个线电流的相量和必为零
D、三个相电流的相量和必为零
参考答案:B
Regarding China-US differences on human rights issues, Hong said the two sides can enhance mutual understanding through dialogue ______ on equality and mutual respect.
A.based
B.to base
C.basing
D.base
异地结算的结算方式有()。
A.信汇结算
B.限额支票结算
C.异地托收承付结算
D.委托银行付款结算
E.支票结算