.123450321.=1×5×1+2×0×3+2×3×4-3×3×5-1×2×4-2×0×2=-24．
原式=-24．
What are the principles and consequences of the Reform Movement
普萘洛尔的药理作用是
A．增加冠状动脉血流量
B．降低心肌收缩力
C．加速心脏传导
D．降低呼吸道阻力
E．增加糖原分解
