按照故障级别定义，超过10万用户*小时话音通信中断的为（）。
A.一般故障
B.严重故障
C.重大故障
参考答案：C
A new ________ on commercial ads during TV dramas took into effect on January 1, 2012. From
then on showing advertisements in the middle of TV dramas isn't allowed.[ ]
A. law
B. case
C. ban
D. limit
单纯性甲状腺肿，下列哪些检查有异常
A．甲状腺B超
B．TSH
C．FT3
D．FT4
E．甲状腺核素扫描
