A.pH范圍 B.細(xì)菌 C.電導(dǎo)率 D.吸光度 E.有機(jī)物
A.線(xiàn)狀光譜 B.帶狀光譜 C.寬帶光譜 D.連續(xù)光譜 E.任何一種均可
A.283.3,357.9,228.8,253.7 B.283.3,253.7,228.8,357.9 C.357.9,253.7,228.8,283.3 D.228.8,283.3,253.7,357.9 E.357.9,253.7,228.8,283.3
A.磷酸氫鈣 B.葡萄糖酸鈣 C.碳酸鈣 D.檸檬酸鈣 E.乳酸鈣
A.溶液中氫氧根離子濃度的對(duì)數(shù) B.溶液中氫離子活度的對(duì)數(shù) C.溶液中氫離子活度的負(fù)對(duì)數(shù) D.溶液中氫離子濃度的對(duì)數(shù) E.溶液中氫離子濃度的負(fù)對(duì)數(shù)