下列哪项不是蛛网膜下腔阻滞的适应证() ["上腹部手术","2~3小时以内的下腹部手术","短时间的盆腔手术","下肢手术","肛门或会阴部手术"]
疟疾的周期性发作,其间歇期的长短取决于() ["感染性子孢子进入人体血循环的数量","子孢子在肝细胞内发育成裂殖体的时间","裂殖子在红细胞内的数量","裂殖体在红细胞内发育成熟的时间","疟原虫毒力强弱"]
日射病
胆道梗阻最好发的部位是() ["肝门段","胰上段","胰腺段","壶腹段","不确定"]
钢筋闪光对焊常见分类有() ["连续闪光焊","常规闪光焊","预热闪光焊","闪光-预热闪光焊","间断闪光对焊"]
常用的水平插值法有()和()。常用的垂直插值法有()和()。