组织应确保用于验证产品和服务要求得以满足的所策划的安排围绕什么进行？
参考答案：控制计划
治疗亚硝酸盐中毒用（）
A.维生素A
B.维生素B1
C.维生素B2
D.维生素B12
E.维生素C
Every week, Xiao Ying plans to use 180 minutes to practice her listening. According to the table, it
takes her ______ hour(s) to do it on weekdays.[ ]
