有关CRA的精选大全

已知*A={x|y=},B={-2,-1,0,1,2,3},则(CRA)∩B=A.{-2,-1,0,1,2}...
问题详情:已知*A={x|y=},B={-2,-1,0,1,2,3},则(CRA)∩B=A.{-2,-1,0,1,2}    B.{0,1,2,3}    C.{1,2,3}    D.{2,3}【回答】D知识点:*与函数的概念题型:选择题...
下列说法不正确的是(  )A.H+H→He+n是聚变B.U+n→Xe+Sr+2n是裂变C.Ra→Rn+He是α...
问题详情:下列说法不正确的是()A.H+H→He+n是聚变B.U+n→Xe+Sr+2n是裂变C.Ra→Rn+He是α衰变D.Na→Mg+e是裂变【回答】D解析原子核的变化通常包括衰变、人工转变、裂变和聚变.衰变是指原子核放出α粒子或β粒子后,变成新的原子...
Attheageof14,HughEvansspentanightwithcockroaches(蟑螂)cra...
问题详情:Attheageof14,HughEvansspentanightwithcockroaches(蟑螂)crawlingalloverhim.Thatexperienceturnedouttobelife-changingforEvans,now30.FarremovedfromhiscomfortablehomeinAustralia,hetraveledtothePhilipp...
已知*A={x|y=},B={x|-1≤2x-1≤0},则CRA∩B=   A.(4,+∞)  B.[0,]...
问题详情:已知*A={x|y=},B={x|-1≤2x-1≤0},则CRA∩B=   A.(4,+∞)  B.[0,]        C.(,4]       D.(1,4]【回答】 B知识点:*与函数的概念题型:选择题...
已知*A={x|3≤x<7},B={x|2<x<10}.求CR(A∪B);    CR(A∩B);     ...
问题详情:已知*A={x|3≤x<7},B={x|2<x<10}.求CR(A∪B);    CR(A∩B);        (CRB)∪A;        (CRA)∩B【回答】知识点:*与函数的概念题型:选择题...
用CRA造句子,“CRA”造句
1、Chronicrespiratoryalkalosis(CRA),CRAplusmetabolicalkalosisandmetabolicacidosisareseldom.2、StorageconditionsandtemperaturelogswillbecheckedbytheCRAduringMVandreported.3、ColorDopplerimagingsuggeste...
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