传染性非典型肺炎的潜伏期通常为() ["1周内","2周内","3周内","4周内","5周内"]
一对直肠癌指诊的描述中不正确的是:() ["85%的直肠癌位于手指可触及的部位","肠壁上硬结性肿块或溃疡","推之不移","肠腔狭窄","指套染血"]
下列对结合胆红素的说法错误的是() ["主要是双葡萄糖醛酸胆红素酯","与重氮试剂呈直接反应阳性","随正常人尿液大量排出","不易透过生物膜","结合胆红素无毒性"]
传染性非典型肺炎的传播途径主要是() ["近距离的飞沫传播","粪-口途径传播","经鼻、眼接触传播","血液传播","蚊虫叮咬"]
血红素加氧酶主要存在于单核巨噬细胞的() ["线粒体","微粒体","细胞核","细胞质","细胞膜"]
“效益背反”原理?