表示层
不属于肠道病毒共同特点的是() ["为裸露的小核糖核酸病毒","耐酸,耐乙醚","核酸有感染性","只在肠道增殖并引起腹泻","可侵犯神经系统及其他组织"]
呼吸功能失常的主要病因不包括() ["呼吸系统疾病","循环系统疾病","中枢神经系统疾病","周围神经性疾病","消化系统疾病"]
葡萄簇型横纹肌肉瘤之主要形态特征是() ["幼稚横纹肌细胞","原始间叶细胞","紧靠黏膜下方有一宽带状的细胞密集区,细胞核大核分裂易见,称为“形成层”","丰富的黏液样基质","以上都不是"]
人类是唯一宿主的病原体为() ["钩端螺旋体","汉坦病毒","HPV","鹦鹉热衣原体","立克次体"]
密码学的基础知识