【单选题】通过乘务长宣读任务书,乘务员可获得( )信息。
【判断题】回归模型中,虚拟变量的引入数量,要根据定性变量的个数、每个定性变量的类型及有无截距项来确定。
【单选题】发现实际问题中的数学成分,并对这些成分做符号化处理,把一个实际问题转化为数学问题,这是( )的过程。
【单选题】There was a woman with normal vision whose father was color blind. She married a man with normal vision whose father was also color blind. What is the probability of their son affected by color blind?
【单选题】It was______ the policeman came______ the parents knew what had happened to their son.
【单选题】_______ made the parents proud was________ their son had been admitted to a key university.
【单选题】通过乘务长宣读任务书,乘务员可获得( )信息。
【判断题】尽管地球上的财富一直以加速度增长,但一直困扰着人类的那些基本社会问题——贫困、疾病、教育机会缺失等——并没有随人类财富的增加而减少或减轻,在某些区域,甚至有加剧之势。