休克时胃肠道黏膜缺血、缺氧可使正常黏膜 ( )
A．内皮细胞B．尿量减少C．再灌注损伤D．网状内皮细胞受损E．上皮细胞屏障功能受损
参考答案：A
—How did she get infected?
—She _______ the viruses without any protection．
A．exposed to
B．had exposed to
C．was exposed to
D．been exposed to
在转化率65%-80%范围内，转化率每上升（）ROM可增加0.6-2.0。
A.5%
B.8%
C.10%
D.15%
