最能准确反映阻塞性通气功能障碍的指标是()。
A.一秒率
B.肺活量
C.通气储备功能
D.潮气容积
E.肺总量
参考答案:C
—It is ridiculous that so many people believe the world will disappear in 2012.
—________ it is true?[ ]
A. How come
B. So what
C. What if
D. How about
下列哪项为胎儿枕下前囟径
A.由鼻根到枕骨隆突
B.由颏骨下方中央到后囟门顶部
C.由前囟门中央到枕骨隆突下方
D.两项骨隆突之间
E.由前囟门前端到枕骨大孔