面向社会开放的电子公告系统、聊天室、网络新闻组,()应当履行保密义务,建立完善的管理制度,加强监督检查。
A.其开办人
B.其开办人或其上级主管部门
C.其管理人员
参考答案:A
已知二次函数y=-x2+4x-3,其图象与y轴交于点B,与x轴交于A,C两点.求△ABC的周长和面积.
Given the covered call option diagram below and the following information, what are the dollar values for points X and Y The market price of the stock is $70, the strike price of the call is $80, and the call premium is $5.()
A. $75, and point Y represents a dollar value of $15.
B. $70, and point Y represents a dollar value of $15.
C. $80, and point Y represents a dollar value of $15.