怎样才能生产出优良的二、三级菌种?
参考答案:
菌种制作过程中,只要做到:
选择优良菌种à选择正确的配方和优质原料à严格灭菌à严格无菌操作à科学培育à优良的二、三级菌种。
A 35-year-old multigravida at 16 weeks gestation tells the nurse that she has had frequent mood swings during this pregnancy. What would be the nurse’s best suggestion to the client
A. Seek professional counseling.B. Keep her feelings to herself.C. Try to avoid fatigue and stress.D. Decrease her narcissistic behaviors.
附子强心的主要成分是
A.去甲乌药碱B.乌头碱C.姜烯酮D.多巴胺E.乙酰胆碱