A. 火焰光度法 B. 高锰酸钾滴定 C. EDTA络合滴定法 D. 邻甲酚酞络合酮法 E. 原子吸收分光光度法
A. cover no other areas but technical ones B. have functions similar to colleges and universities C. provide 75% of their programs in technical areas D. are at a lower level of higher education