标准立位胸片，气胸线位于肺野外1/4处，提示患肺压缩率为（） ["10%","25%","50%","75%","93%"]
发绀是指100ml血中还原Hb大于（） ["3g","4g","5g","6g","7g"]
以下哪项不是骨组织的组成成分（） ["骨细胞","有机纤维","水","弹性纤维","黏蛋白"]
1mmolCO2在标准情况下体积约为（） ["11.26ml","22.26ml","44.46ml","2.26ml","4.46ml"]
关于垂体，错误的是（） ["位于颅中窝、蝶骨体上面的垂体窝内","垂体又分为腺垂体和神经垂体两大部分","腺垂体的远侧部、结节部合称为神经垂体（垂体后叶）","腺垂体（垂体前叶）分泌多种激素","垂体后叶贮存和释放血管升压素（抗利尿激素）和缩宫素"]
阵发性室性心动过速。
