单项选择题 设,则a,b取值为( ) A. a=0,b≠0 B. a=b=0 C. a≠0,b=0 D. a≠0,b≠0
多项选择题 以下哪些情况下,要对股价进行除息处理_____。
判断题 All American citizens who are registered to vote cast their ballots for members of the US Electoral College, known as electors, who in turn cast direct votes, known as electoral votes for Vice President. _____