【判断题】总体参数是指总体上的各种数字特征,是描述一个总体情况的统计指标。
【单选题】What will take place in the next few years, according to the president?
A.
A big change in technologies and in the way of thinking.
B.
A change in digitalisation.
C.
A change in the way of manufacturing.
D.
A change in the business cycle.
【单选题】A.Have a big deal with the woman.B.Take the paper out of the copy machine.
A.
Have a big deal with the woman.
B.
Take the paper out of the copy machine.
C.
Buy a new copy machine.
D.
Ask someone to repair the copy machine.
【简答题】在新产品的开发工作过程中 ,有 ( )、 ( )、 自行研究与技术引进相结合的方法、 ( )四种 开发方法。
【简答题】(9-3)对输入的字符串进行判断。要求如下: (1) 自定义一个异常类NotPositiveException,继承Exception, (2) 输入一个字符串str,利用Integer的parseInt(str)方法把字符串str解析成整数x; 3)如果x是负整数或零,抛出NotPositiveException对象; (4)如果不能解析成功,捕获parseInt(str)方法抛出的Number...
【单选题】一项调查表明,在所抽取的1000个消费者中,他们每月在网上购物的平均消费是200元,他们选择在网上购物的主要原因是“价格便宜”。这里的参数是( )用来描述总体特征的概括性数字度量。
【单选题】I have got _______ good news for you.You are to change _______ trains in Changsha and take _______ fast one.
【单选题】一项调查表明,在所抽取的1000个消费者中,他们每月在网上购物的平均消费是200元,他们选择在网上购物的主要原因是“价格便宜”。这里的参数是( )用来描述总体特征的概括性数字度量
【单选题】—Which tie would you prefer,the black tie or the red one,Madam? —I’ll take ________ to have a change sometimes.