A.1 B.2 C.3 D.4
A.經(jīng)濟(jì)性強(qiáng) B.數(shù)據(jù)準(zhǔn)確 C.針對(duì)性強(qiáng) D.適應(yīng)性強(qiáng)
A.大于 B.等于 C.小于 D.大于等于