患者呕吐清水痰涎，脘闷不食，头晕心悸，舌苔白腻，脉滑。其证候是
A．饮食停滞B．痰饮内阻C．气滞痰阻D．食积痰阻E．气滞食积
参考答案：B
---Tom has been fired by his boss．
--- ? As far as I know, he is a hardworking and considerate fellow．
A．Why not
B．How come
C．What then
D．So what
当功率因数接近60°时，现场检验仪可能会出现错误判断。
