肝微粒体药物代谢酶系中主要的氧化酶是（）。
A.黄嘌呤氧化酶
B.醛氧化酶
C.醇脱氢酶
D.P-450酶
E.假性胆碱酪酶
参考答案：D
— We could have asked Miss Keller for help. She is always kind-hearted.
— Yes. A whole day _____. [ ]
A. will waste
B. had wasted
C. was wasted
D. would be wasted
吸入NO治疗时吸入气中NO与O产生反应的NO应限制在（）
A.0.1ppm以内
B.0.5ppm以内
C.1ppm以内
D.5ppm以内
E.10ppm以内
