【判断题】We don’t have to debate on one thing, that is, a healthy diet means balanced nutrition.()
【单选题】度量风险大小常常使用离散系数这个统计量。关于离散系数的说法,正确额是()。
D.
经济单位的损失分布的离散系数越小,财务稳定性越强
【简答题】离散系数比标准差更适用于比较两组数据的离散程度,这是因为离散系数( )。
【单选题】离散系数的意义是( )。
C.
离散系数越大,标准差对总体指标值的代表性越强
D.
离散系数越大,标准差对总体指标值的代表性越弱
【单选题】It was the first time I _______ there and I was impressed by the friendly people very much.
【简答题】案例《老太太买水果》 思考:1、为什么三个小贩产生的结果完全不一样呢? 2.第三个小贩有什么特点呢?
【判断题】As a well-trained tour guide, we don’t have responsibilities to remind tourists to behave well and respect religions. ( )
【单选题】Roger:Hurry up!We don’t have much time left. Dick:.We still have two hours. Roger:Come on!This is my first time ever to take a plane.I don’t want anything to go wrong.