胃静脉曲张常发生的部位是() ["体部","胃底部","贲门部","胃窦部","幽门部"]
老年性后囊下型白内障的特点是() ["早期出现近视改变","早期即影响视力","容易引起青光眼发作","必须等皮质完全混浊才能手术","以上均不是"]
休克按病因分为() ["失血性休克","创伤性休克","烧伤性休克","感染性休克","心源性休克等"]
长期服用异烟肼可引起() ["中枢兴奋,诱发癫痫和惊厥","末梢神经炎","肝损害","耳鸣或耳聋","球后视神经炎"]
癫痫的年发病率为()。 ["50%~70%","50‰~70‰","50/万~70/万","50/10万~70/10万","50/100万~70/100万"]
浇注过程中水口为什么会堵塞?