$10
Health requirements of daily learning time for secondary and elementary school students
中华人民共和国卫生部
本标准规定了中小学生一日学习时间、睡眠与体育活动时间、课间休息与排课要求。本标准适用于全日制普通中小学,其他类型中小学可参照使用。
This standard is the original Chinese electronic standard.
If you need translation, please contact email: ChineseStandardsLibraryS001@gmail.com.
After you successfully purchase, we will send the electronic version of this standard to your email address