有一个中心数据库和（）是MIS的重要标志。
A.计算机网络系统
B.硬件
C.软件
D.硬件与软件
参考答案：A
-- Sir, could you please wait for another 20 minutes and we’ll serve you very soon.
-- Another 20 minutes? It was only 6 o’clock ________ I got here, but it’s 7∶10 now.
A．since
B．when
C．that
D．before
股票发行费不可在股票发行溢价中扣除。( )
