A.陽(yáng)性對(duì)照 B.陰性對(duì)照 C.空白對(duì)照 D.自身對(duì)照 E.陽(yáng)斷試驗(yàn)對(duì)照
A.陽(yáng)性對(duì)照 B.空白對(duì)照 C.替代對(duì)照 D.阻斷試驗(yàn)對(duì)照 E.以上均需設(shè)置
A.陽(yáng)性對(duì)照 B.陰性對(duì)照 C.阻斷試驗(yàn)對(duì)照 D.替代對(duì)照 E.空白對(duì)照