多项选择题
A.中国知网 B.中国报刊索引 C.万方数据库 D.重庆维普数据库
A.Elsevier B.EBSCO C.Springer D.SCI
A.用原子核变换方法获得的物质 B.科学发现 C.智力活动的规则和方法 D.疾病的诊断和治疗文法 E.动物和植物的品种
A.Standards Australia On-line http://www.standards.com.au B.IEEE Standards http://standards.ieee.org C.International Labour Organization http://www.ilo.org D.The National Standards System Network http://www.nssn.org E.Standards Council of Canada http://www.scc.ca F.National New Zealand http://www.standards co.nz
微信扫一扫,加关注免费搜题