单项选择题
A.off B.underC.alongD.onto
填空题 偏态系数取值为-1.5,说明变量值属于()分布。
单项选择题 A.1ayers B.levels C.degrees D.points
单项选择题 The governor appointed a committee to find out what was wrong( )A.did upB.set upC.put upD.took up