20371-1-AP targets SFRS2 in WB, IHC, IF/ICC, IP, RIP, ELISA applications and shows reactivity with human, mouse, rat samples. Tested Reactivity human, mouse, rat Cited Reactivity human, mouse, rat Host / Isotype Rabbit / IgG Class Polyclonal Type Antibody Immunogen Peptide Full Name ...
【答案】(1)2.(2)存在,2.(3)π. 【解析】 试题分析:(1)过点C作CE⊥AB于E,根据CE=BCsin∠B求出CE,再根据AD=CE即可求出AD; (2)若以A、P、D为顶点的三角形与以P、C、B为顶点的三角形相似,则△PCB必有一个角是直角.分两种情况讨论:①当∠PCB=90°时,求出AP,再根据在Rt△ADP中∠DPA=60°,...