Medline光盘数据库的内容涵盖三种重要的纸本医学文献检索工具,它们()。
A. BA、IM、EM
B. BA、EM、International Nursing Index
C. BA、Index to Dental Literature、International Nursing Index
D. IM、Index to Dental Literature、International Nursing Index
A、Free Medical Journals
B、The New England jounalof Medicine
C、JAMA
D、MEDLINE