![](https://static.youtibao.com/asksite/comm/h5/images/m_q_title.png)
关于PubMed数据库的外部资源链接中错误的说法是()
A.外部资源链接功能强大,可链接到各种可获得的WEB在线资源
B.外部链接包括全文、生物学数据库、研究工具等
C.外部资源链接的都是免费资源
D.在PubMed数据库中可点击“Linkout”进入外部资源链接
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)
A.外部资源链接功能强大,可链接到各种可获得的WEB在线资源
B.外部链接包括全文、生物学数据库、研究工具等
C.外部资源链接的都是免费资源
D.在PubMed数据库中可点击“Linkout”进入外部资源链接
A.LJ
B.JoshuaLederberg
C.Lederberg
D.JL
A.Publicationdates
B.Freefulltext
C.Languages
D.Species
A.Searchfields
B.Subjects
C.Species
D.Articletypes
A.Publicationdates
B.Ages
C.Languages
D.Species
A.CerebralHemorrhageANDtherapy
B."CerebralHemorrhage/therapy"[Majr]
C."CerebralHemorrhage/therapy"[Majr]ANDSystematic[sb]
D."CerebralHemorrhage/therapy"[Majr]Filter:SystematicReviews
A.breastcancer[ti]ANDsurgery[ti]publisdinthelast5years
B.BreastNeoplasms/surgery[Mesh]publisdinthelast5years
C.BreastNeoplasms[Mesh]publisdinthelast5years
D.breastcancersurgery[ti]publisdinthelast5years