建设信息系统的可行性研究主要包括？
参考答案：经济可行性，技术可行性，人员可行性和组织可行性。
It's fun to see all the food I have made _____ in such a short time. [ ]
A. eating
B. to be eaten
C. being eaten
D. eaten
氯霉素眼药水中硼酸的主要作用是（）
A.增溶
B.调节pH
C.防腐
D.增加疗效
E.助溶
