Only adults are allowed to have access       the Internet in the Internet cafes in our city.

A．with

B．to

C．for

D．in

FC/PC尾纤连接器是（）。

A.方形光纤接头/微凸球面研磨抛光

B.圆形光纤接头/研磨抛光

C.卡接圆形光纤接头/球面抛光

D.方形接头/面呈8度角抛光