为了节省润滑油,长常将更换下来的废油进行再生,其基本过程有()等步骤。
A.粗滤
B.蒸馏
C.接触
D.精滤
参考答案:A, B, C, D
My mom and I am fighting. We used to get up so well .But these days, she has been arguing with me about me not come home. She thinks I should spend more time help her with the housework instead going out a lot. In her eyes, I'm just a lazy boy whom only loves playing. The fact is that some of my friends and I are going to different school soon. so I want to spend as much time as I can with her now. I know I should try to understand the situation from her point of a view. But I hope she can understand what important these friends are to me.
医疗机构今后印制的处方颜色,麻醉品处方是()
A.白色处方
B.橙色处方
C.淡绿色处方
D.淡红色处方
E.淡黄色处方