A.70% B.75% C.80% D.85%
A.高利潤(rùn)區(qū)B.低利潤(rùn)區(qū)C.趨于比較平緩的利潤(rùn)
A.經(jīng)濟(jì)B.安全C.發(fā)展D.主權(quán)