【正文】
考研屋 提供各大機(jī)構(gòu)考研、公務(wù)員、四六級(jí)輔導(dǎo)視頻課程 專業(yè)提供提供各大機(jī)構(gòu)考研、公務(wù)員、四六級(jí)輔導(dǎo)視頻 課 Questions 8586 In opposing the 1970 Clean Air Act, the United States automobile industry argued that meeting the act’s standards for automobile emissions was neither economically feasible nor environmentally necessary. However, the catalytic converter, invented in 1967, enabled automakers to meet the 1970 standards efficiently. Currently, automakers are lobb