艾滋病下列哪项减少明显() ["A．IgG","B．IgM","C．IgA","D．CD","E．CD"]
乳突照片上可见哪些先天性变异?
下列哪项属于梅尼埃病诊断依据中必备的项目() ["A．反复发作的旋转性眩晕","B．至少一次纯音测听为感音神经性聋","C．耳鸣","D．耳胀满感","E．排除其它疾病引起的眩晕"]
下列哪项不符合梅尼埃病的临床特征() ["A．眩晕发作时有意识障碍","B．眩晕、耳鸣、耳聋、耳胀满感","C．上感后眩晕，无耳鸣和耳聋","D．眩晕伴耳聋、面瘫，患耳有疱疹","E．头处于某一位置则眩晕，重复检查眼震方向不变"]
如何判断避孕环位置异常?
眼眶平片适于检查哪些疾病?如何进行眼眶平片分析?
