测量电流、电压时,“万用表”应如何与负载连接()。
A.串联
B.串并联
C.并联
参考答案:B
In the UK and the USA people often give flowers and cakes as birthday presents. They ________ open their presents at once.
A.always
B.never
C.sometimes
D.hardly ever
IUB口对接过程完成了传输对接后,就需要配置IUB口局向数据和小区数据。正常情况下,小区和公共信道可以正常建立。开通完成HSDPA业务后,如果需要配置1Mbps的下行速率,那么需要开通()个时隙的全部码道。
A、1
B、2
C、3
D、4