Mallory磷钨酸苏木精（PTAH）染色法用于显示（） ["A.横纹肌纤维","B.平滑肌纤维","C.胶原纤维","D.弹性纤维","E.神经纤维"]
下列哪项不是运动神经元病的病因和发病机制（） ["重金属","氧化应激","线粒体功能障碍","自身免疫机制","病毒感染"]
产后出血发生率占分娩总数的（） ["2％～3％","5％～6％","4％～5％","3％～4％","1％～2％"]
非选择性蛋白尿存在主要说明（）。 ["肾小管病变","肾小球与肾小管联合病变","肾小球滤过膜电荷数改变","肾小球滤过膜孔径异常增大","以上都不是"]
鼻窦中成熟最早的是（） ["上颌窦","额窦","前组筛窦","后组筛窦","蝶窦"]
胃插管术禁忌证
