确定投资方案可行的必要条件是()。
A.投资利润率大于0
B.净现值大于0
C.内部报酬率大于0
D.内部报酬率大于必要报酬率
E.投资利润率大于必要报酬率
参考答案:B, D
(2013·江西九校一模)A lot of lovers chose to get married on Dec. 12, 2012, ________ the date, the month and the year match.
A.that
B.on which
C.in which
D.which
残留奥氏体的存在,会降低工件的淬火硬度,在室温下使用时,会自发发生马氏体转变,使工件尺寸增大。()