
【名词&注释】
相互关系(relationship)、随机变量(random variable)、数理统计方法(mathematical statistics method)、自变量(independent variable)、有害物质(harmful substance)、灾区饮用水、过滤嘴(filter tip)、食品包装袋(food packing bag)、胃酸过多(hyperchlorhydria)
[单选题]( )是描述分析相关因素相互关系的一种数理统计方法,通过建立一个或一组自变量与相关随机变量的回归分析模型,来预测相关随机变量的未来值。
A. 专家会议法
B. 德尔菲法
C. 回归分析法
D. 弹性系数法
查看答案&解析
举一反三:
[单选题]听第15段材料,回答第19至第22题。19.Why is Annie in the program?
A. She has been driving for the longest time.
B. She has been living there for nearly 84 years.
C. She has failed the driving test the most times.
[单选题]23.— _______ your friend play the guitar?—Yes, he can, but he can;t play it well.
A. Must
B. Can
C. Should
D. Need
[单选题]“关爱生命,拥抱健康”是永恒的主题。下列做法不利于人体健康的是
A. 震后灾区饮用水应消毒处理后才能饮用
B. 向易变质的食品包装袋(food packing bag)中充入氮气
C. 胃酸过多(hyperchlorhydria)的病人应少喝汽水
D. 香烟的过滤嘴(filter tip)可滤除CO等有害物质,故吸烟对身体无害
[单选题]19.
A. Her
B. His
C. She
D. He
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