某种植物分布在占地球表面70%的水域环境里,空气中许多氧气由它来提供,它很简单,没有根、茎、叶的分化,诗人曾用“日出江花红胜火,春来江水绿如蓝”来形容它,它是____植物。
藻类
The nurse is providing preoperative care to a client scheduled for an appendectomy. Which statement regarding pain control is most appropriate
A. "There’s no need to ask for pain medication, you’ll receive it on a schedule. "B. "Take your pain medication after walking so that you won’t feel dizzy. "C. "Take your pain medication before your pain becomes intense. "D. "Use as little pain medication as possible to avoid addiction. "
解救有机磷酸酯中毒时尽早使用氯磷定的原因是
A.因为氯磷定难以进入组织细胞内
B.氯磷定不易与磷酰化胆碱酯酶结合
C.促进有机磷酸酯与胆碱酯酶共价键结合
D.避免磷酰化胆碱酯酶发生“老化”
E.体内胆碱酯酶的合成已经受到抑制