- DETERMINATIONOFMOLECULARWEIGHTDISTRIBUTIONOFPOLY(1,4-PHENYLENETEREPHTHALAMIDE)BYGPCRockeryisdividedintothreekinds,reallystonerockery,waterclaystonerockeryandGPCplasticrockerystone.Gaschromatography-triplequadrupolemassspectrometry(GC-MS/MS);Gelpermea...
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- 问题详情:如图,AB、CD、EF、MN均为直线,∠2=∠3=70°,∠GPC=80°,GH平分∠MGB,则∠1=()A.35° B.40° C.45° D.50°【回答】D【考点】平行线的判定与*质.【分析】根据平行线的判定得出AB∥CD,根据平行线的*质得出∠BGP=∠GPC=80°,求出∠BGM=100°,根据角平分线定义求出即可....
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