股金冻结时，应（）。
A、先冻结资格股
B、先冻结投资股
C、再冻结资格股
D、再冻结投资股
参考答案：B, C
My new pen __________.Who __________ have taken it?
A．has been disappeared; can
B．has disappeared; could
C．is missing; should
D．has been lost; may
电力系统自动化包括哪两个方面的内容？
