()的制定是工艺师对产品认识理解力的体现,是完成生产任务和保证产品质量的可靠保证。
A.工艺流程
B.技术流程
C.质量坚定
D.生产流程
参考答案:A
As you worked late yesterday, you _____ have come this morning. [ ]
A. mayn't
B. can't
C. mustn't
D. needn't
简述分税制改革的主要内容。