—What's this?
—______. [ ]
A. Yes, it is
B.No, it isn't
C.It's a map
D.Yes, this is
答案:C
非常保守型的投资者通常不会选择的投资理财工具是()。
A.储蓄
B.国债
C.保本型理财产品
D.期货
何谓农业技术要素投入报酬变动规律及其理论依据?