A.有效保護(hù)本國(guó)經(jīng)濟(jì)和應(yīng)對(duì)經(jīng)濟(jì)危機(jī) B.推動(dòng)各國(guó)對(duì)外貿(mào)易趨于平衡 C.促進(jìn)世界貿(mào)易趨于穩(wěn)定 D.加劇世界經(jīng)濟(jì)大危機(jī)