分散式控制系统在实现控制功能、危险性分散的同时，实现了对生产过程监视、控制、管理功能的集中。
参考答案：对
He made another wonderful discovery, ________ of great importance to science. [ ]
A. which I think is
B. which I think it is
C. which I think it
D. I think it is
下列哪种药物对克林霉素所致假膜性肠炎有较好疗效？（）
A.红霉素
B.林可霉素
C.万古霉素
D.杏他霉素
E.麦迪霉素
