资金的内部来源是()。
A、普通股和优先股
B、股利和留存利润
C、普通股
D、留存利润
参考答案:D
— Did you enjoy her performance at the party?
— Yes, I've never seen ____________ one before. [ ]
A. a more excited
B. the most excited
C. a more exciting
D. the most exciting
设两个定性因素为A和B,每个因素的两水平分别用“+”和“-”表示有无,则配对四格资料是检验
A.A+B-与A-B+差别B.A+B+与A-B-差别C.A+A+与B+B+差别D.A-A-与B+B+差别E.A-A-与B-B-差别