甲、乙、丙三人进行射箭测试,每人10次射箭成绩的平均数都是8.9环,方差分别是S 发布时间:2017-06-04 16:41 │ 来源:www.tikuol.com 题型:填空题 问题: 甲、乙、丙三人进行射箭测试,每人10次射箭成绩的平均数都是8.9环,方差分别是S2甲=0.65 ,S2乙=0.55S,S2丙=0.50,则射箭成绩最稳定的是______.
题型:填空题 Dr. Smith was always ______ the poor and the sick, often providing them with free medical care.A. reminded of B. absorbed inC. tended by D. concerned about 查看答案