SBR池中溶解氧的控制方式通常是DO仪控制和()控制相结合。
A、液位
B、泥位
C、时间
D、ORP仪
参考答案:C
—What do you think the ___________should do first?
—They should learn to take ___________as well as share rights in life.
A.grown-up;responsibility
B.growns-up;responsibility
C.grown-ups;responsibilities
D.growns-ups;responsibilities
为避免交叉污染,冷菜改刀和凉拌操作应()
A.在专用场所进行
B.使用专用的刀、砧板、抹布
C.固定加工人员,负责熟食从原料到改刀的全过程加工
D.专间冰箱内不能存放食品原料、半成品