虚拟网包月资费的用户退出虚拟网后，若当月再加入另一单位的包月虚拟网，则当月需向用户收取两笔虚拟网包月费。（）
参考答案：错
In this institution a medal together with a prize of certain sum of money _______ gains success in science and technology every two years.
A．are given to anyone
B．is given to whoever
C．are given to who
D．is given to whom
双绕组电机相数及接线方式（）
