以下哪些业务不是智能网业务:()。
A.对方付费电话业务
B.公用电话业务
C.呼叫转移
D.国内长途直拨
参考答案:B, C, D
—Hi, Susan! You look __________ today.
— Well, I got _________ A in the English test.
A.happy; an
B.happy; a
C.happily; an
D.happily; a
100kV产生X线的最短波长是()
A.0.124nm
B.0.0124nm
C.0.0124cm
D.1.24nm
E.1.24cm