代维公司应建立安全生产责任制、()、()和考核制度等管理制度。
参考答案:培训制度;质量管理
氧化锌的脱硫原理如何?
Mrs Wang has a toothache. She wants to ________.[ ]
A. lay down and rest
B. see a dentist
C. drink a lot of water
D. drink hot tea with honey