【单选题】某工厂的饮料装瓶容量要求为 500+10 毫升。抽取 8 个样本,超出 500 毫升的数据分别是 3 、 4 、 5 、 6 、 2 、 4 、 7 、 9 。请计算样本的均值、中位数、极差和样本方差。
【单选题】Which principle did the shadoof apply?
【简答题】电压单位为(),用字母V表示;电流单位为(),用字母A.表示。
【单选题】与质量指标有单值对应关系、易于测量的变量,间接反映产品质量、生产过程的实际情况的参数为()
【单选题】下列知识整理的内容均正确的一组是 [ ]
A.
物质的分类 钢和铝都是金属材料 冰水和糖水都是混合物 纯碱和烧碱都是碱
B.
物质的检验 用肥皂水来检验硬水和软水 用灼烧的方法能区别棉花和羊毛 用适量的水能区分NH 4 NO 3 固体和NaCl固体
C.
化学与生活生产 硫酸铵不能与草木灰混合施用 使用含氟牙膏可预防龋齿 用聚氯乙烯塑料袋包装食品
D.
化学与能源 氢气、酒精-清洁能源,可再生能源 石油、煤、甲烷-化石燃料,不可再生能源 未来的新能源-可燃冰,不可再生能源
【单选题】样本数据6,7,7,8,10,10的均值为
【单选题】J. Smith was preparing the December 31 year-end financial statements for her company, Smith’s Used Vehicles. On the December 25, the company sold a car that it had not yet paid for. J. Smith did not r...
A.
separate entity assumption
D.
full disclosure principle
【单选题】J. Smith was preparing the December 31 year-end financial statements forher company, Smith’s Used Vehicles. On December 25, the company sold a car thatit had not yet paid for. J. Smith did not record ...
A.
Separate entity assumption
D.
Full disclosure principle
【单选题】According to the courtesy principle, which one is better choice?
A.
We are sorry that we did not make ourselves clear.
B.
We are sorry that you misunderstood us.