下列哪项不是增强迷走神经张力的方法()
A.干咳
B.按摩颈动脉窦
C.刺激咽喉部
D.作Vasalva动作
E.按摩眼球
参考答案:A
___nearly all our money, we couldn’t afford to stay at a hotel.
A.Having spent
B. To spent
C.Spent
D.To have spent
相位表和功率因数表是否有区别?