A.旅游需求量增加大于5% B.旅游需求量下降大于5% C.旅游需求量增加小于5% D.旅游需求量下降小于5%
A.EP<1 B.EP≤1 C.EP=1 D.EP>1
A.IEPI>l B.IEPI<1 C.IEPI≤1 D.IEPl=1