一组变量,其变量值分别为:2、4、6、8、10,则样本标准差为()。 A.7.314 发布时间:2018-06-15 19:37 │ 来源:www.tikuol.com 题型:单项选择题 问题: 一组变量,其变量值分别为:2、4、6、8、10,则样本标准差为()。A.7.314B.10C.2.828D.8E.3.162
题型:单项选择题 患者男性,36岁,水肿、少尿1个月,鼻出血3天,查体贫血貌,血压160/90mmHg,Hb80g/L,尿蛋白(++),尿隐血(++),尿红细胞6~8个/HP,血肌酐846μmol/L,B超示左肾9.1cm×4.1cm×4.2cm,右肾8.6cm×4.3cm×4.1cm,最可能的诊断是()A.慢性肾炎急性发作B.急进性肾炎C.急性肾衰竭D.慢性肾衰竭E.高血压肾动脉硬化 查看答案
题型:单项选择题 On some projects, especially ones of smaller scope, activity sequencing, activity resource estimating, activity duration estimating, and () are so tightly linked that they are viewed as a single process that can be performed by a person over a relatively short period of time.A.time estimatingB.cost estimatingC.project planningD.schedule development 查看答案