图示体系,质点的运动方程为:() ["A","B","C","D"]
二尖瓣狭窄的病理生理改变哪项是正确的() ["肺血管阻力增高","轻度病人降低左房压可提高心排血量","左室舒张期负荷过重","左房压>25mmHg,100%病人血管外肺水增多","瓣口面积<1.0cm2时,肺血管阻力急骤降低"]
下列哪种不属于眼内灌注液成分() ["Na+","谷胱甘肽","维生素","葡萄糖","Mg2+"]
图a)体系的自振频率ωa与图b)体系的自振频率ωb的关系是:() ["ωa<ωb","ωa>ωb","ωa=ωb","不能确定"]
非发绀型先天性心脏病下列哪种诱导方法最为理想() ["七氟烷","依托咪酯","氯胺酮","异氟烷","恩氟烷"]
哪些储蓄存款的利息所得可以免征个人所得税?