外键和相应的主键可以不同名，只要定义在相同值域上即可。( )
参考答案：对
Professor Black has been working in the forest for years, _____ to the research of wild plants and animals. [ ]
A. devoted
B. devoting
C. to devote
D. and devote
胆石症
A．急性心肌梗死B．感染性心内膜炎C．急性左心功能不全D．甲状腺功能亢进症E．高度房室传导阻滞下列症状最常见于何种疾病
