题目内容
制备离体工作心脏进行灌流实验，所需的器械
查看答案
搜索结果不匹配？点我反馈
更多问题
往离体工作蛙心灌流液中加入2滴3%CaCl2，可观察到心肌出现强直收缩
[音频]Andy and Donna are good friends. Donna is recovering from a 1 (bike, car, bus) accident and she still feels rather 2 (sick, weak, sad) now. Andy comes to see Donna. Donna gives her heart-felt thanks to Andy for sending her a 3 (gift, thank-you, get-well) card the day before. She thinks that Andy is very 4 (careful, thoughtful, helpful). She also expresses her love for the beautiful flowers Andy has brought her. These flowers are from Andy's 5 (niece's, father's, sister's) garden. They are so fresh and look so nice. Donna keeps them right on the 6 (desk, counter, table) beside her bed. When it's time to say goodbye, Andy asks Donna to 7 (take a rest, take care, take leave).
儿茶酚胺类药物的筛选及对血压的作用实验中，没有使用的试剂是
请问：华为公司的资源需求主要基于以下哪种类型？
微信支付 
支付宝支付