脑电图检查对下述哪种疾病有一定的诊断价值()?
A.脊髓小脑性共济失调
B.单纯疱疹病毒性脑膜炎
C.脑肿瘤
D.癫痫
E.球后视神经炎
参考答案:B, C, D, E
Those are my books. I like them very much. They are very . [ ]
A. boring
B. scary
C. difficult
D. interesting
集合A=d,b,c上的二元关系R为:R=<a,a>,<c,c>,<a,b>,则二元关系R是()。
A.自反的
B.反自反的
C.对称的
D.传递的