A.50% B.40% C.60% D.30%
A.13% B.20% C.18% D.25%
A.資本節(jié)約型技術(shù) B.勞動(dòng)節(jié)約型技術(shù) C.資源節(jié)約型技術(shù) D.中性型技術(shù)