企业利润额、商品库存额、证券投资额、居民储蓄额指标中、属于时点指标的有( )
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下列统计指标中,属于数量指标的有( )
A. 工资总额
B. 单位产品成本
C. 出勤人数
D. 人口密度
E. 产品合格率
按照绝对数的计量单位不同,总量指标可分为( )、( )、( )三类指标
总体单位总量和总体标志总量随着( )变化而可能转化
What's the type of the following paragraphs?1. In this summer holiday, I got a part-time job as a teacher. This was the first time I taught students. It was full of trouble, but I really enjoyed. I will never forget the experience.
A. narrative
B. argumentative
C. expository