由于财务假定，计算现金流量时，就可以把营业收入和经营成本都看作是在年末发 生的。
参考答案：对
—You have to believe in yourself.No one else will，if you don't.
—________.Confidence is really important.
(2012·天津)
A．It's not my cup of tea
B．That's not the point
C．I don't think so
D．I couldn't agree more
在红外吸收谱中，一般以（）为分界线.
A.1300cm-1
B.1450cm-1
C.2100cm-1
D.1500cm-1
