功能残气量是指() ["是平静呼气末肺内残留的气体量","最大努力呼气后肺内残留的气体量","呼气时直径<2mm的小气道关闭时肺内残留的气体量","不能反映气体交换功能","小儿的较大"]
用于原发性肝癌实验室筛查的最佳指标是()。 ["AFP","CEA","PSA","CA125","NSE"]
带状疱疹最具特征性的临床表现是() ["沿单侧周围神经分布的簇集性小水疱","神经痛","好发于皮肤黏膜交界处","红斑基础上簇集性的小水疱","躯体单侧分布的小脓疱"]
铅及无机化合物进入人体的主要途径是() ["皮肤","皮肤和呼吸道","呼吸道","皮肤和消化道","以上都不是"]
下列静脉麻醉药哪种可引起呼吸频率减慢,潮气量增加() ["氯胺酮","硫喷妥钠","丙泊酚","羟丁酸钠","地西泮"]
羊水过多的常见原因有哪些?