某公司购买一台计算机放置一年未用,一年期间又有新型号计算机出现,原购买的计算机有:
A.有形损耗 B.物理损耗 C.自然损耗 D.无形损耗
参考答案:D
若loga2=m,loga3=n,a2m+n=______.
31. Nobody believed his reason for being absent from the class ______ he had to meet his uncle at the airport.
A.why
B.that
C.where
D.Because