强酸水解
A.295~300nmB.217~220nmC.1700~1800cmˉ1D.420nmE.低40cmˉ1
参考答案:B
Frank insisted that he was not asleep I had great difficulty in waking him up.
A.whether
B.although
C.for
D.so
按照以上选定方法计算的2000年国内生产总值分别为()。
A.89468亿元
B.89357亿元
C.84877亿元
D.87117亿元