A. 正确 B. 错误
A. 2~3mg/(kg·min)下降至1~2mg/(kg·min) B. 3~4mg/(kg·min)下降至2~3mg/(kg·min) C. 4~5mg/(kg·min)下降至3~4mg/(kg·min) D. 5~6mg/(kg·min)下降至4~5mg/(kg·min) E. 6~7mg/(kg·min)下降至5~6mg/(kg·min)