肝硬化患者的腹水形成，主要是由于（）
A.侧支循环形成
B.肝功能障碍
C.门静脉压升高
D.低蛋白血症
E.醛固酮、血管升压素增多
参考答案：C
Waiter, ________?
—Wait a minute, sir. That’s $ 80 altogether.
A．would you charge me
B．how much did we eat
C．may I have the bill, please?
D．would you take the money
诊断成人少尿或无尿，其24小时总尿量应少于（）
A.600ml或300ml
B.550ml或250ml
C.500ml或200ml
D.450ml或150ml
E.400ml或100ml
