【单选题】Which of the following statements about compulsory education around the world is NOT true?
A.
The average of compulsory education around the world is 7.85 years.
B.
The duration of compulsory education around the world ranges from 1 to 13 years.
C.
The duration of compulsory education in the US is 12 years.
D.
The duration of compulsory education in the UK is 12 years.
【单选题】下列有关楼梯踏步的最小宽度和最大高度,哪一组是正确的?
A.
住宅公共楼梯踏步最小宽度250mm,最大高度190mm
B.
住宅户内楼梯踏步最小宽度220mm,最大高度200mm
C.
幼儿园楼梯踏步最小宽度260mm,最大高度150mm
D.
商场公用楼梯踏步最小宽度280mm,最大高度160mm
【判断题】住宅共用楼梯踏步宽度最小是 260mm ,最大高度是 175mm
【多选题】根据材料经济订货批量控制的理论,下列各项中,属于缺货成本构成内容的有( )。
【单选题】温度对发酵过程的影响是多方面的,以下说法不正确的是
【简答题】A.profitable B.voluntary C.accidental D.compulsory