中国石化以（）作为企业经营理念。
A.诚信规范、合作共赢
B.爱我中华奉献石化
C.精细严谨务实创新
参考答案：A
— Have you finished reading Jane Eyre?
— No. I ____ my homework all day yesterday. [ ]
A. was doing
B. would do
C. had done
D. do
球磨机长期停运时，球磨机高压油泵也需要停运。（）
