All the doctors insisted that he ___ badly wounded and that he ___ at once.

A．was… be operated on

B．were.. must be operated on

C．was… should be operated

D．should be…be operated

下面对GSM系统数字基站拉远设备的描述，哪个是正确的？（）

A.基站拉远设备1个近端只能带一个远端。

B.1个近端和1个远端之间需要2根光纤。

C.近、远端均需要安装在室内。

D.可以作为室分系统信源。