【单选题】在参数估计中,要求用样本统计量来估计总体参数,评价样本统计量的标准之一是它与总体参数的离差越小越好, 这种评价标准称为( )
【单选题】在参数估计中,要求用来估计总体参数的统计量与总体参数的离差越小越好。这种评价标准称为()
【简答题】用适当的连词填空 1. I can’t decide ____________ dictionary I should buy. 2. That’s ____________ he refused my invitation. 3. I am very interested in ____________ he has improved his pronunciation in such a sh...
【单选题】一休克病人,血压回升到130/80mmHg,CVP达到10cmH2O,尿量为15ml/h,为增加尿量应该
【简答题】I don’t know whether you happen ______, but I’m going to study in the U.S.A. this September. A. to be heard B. to be hearing C. to hear D. to have heard
【多选题】从一个总体中可以抽取许多个样本,因此( )。
【简答题】W: Good morning! M: Good morning! W: I haven’t 1 . How are you doing? M: Very good. I don’t know if you hear that I 2 . W: That’s cool. Do you have any roommates? M: No. I think it is 3 for me, becaus...
【单选题】患者女,37岁,以“右上腹阵发性绞痛”收入院,诊断为胆石症。行胆总管切开取石术T管引流术。术后5天,引流液每天2000ml,提示
【单选题】下列说法错误的是( )
B.
存在主义课程论认为课程最终要由学生的需要来决定
C.
美国学者多尔把他设想的后现代课程标准概括为“4R”