对脑组织有保护功能,且能防止脑血管痉挛的钙拮抗剂是() ["硝苯地平","美托洛尔","尼莫地平","硝酸甘油","多巴胺"]
根据合同当事人各方权利义务的分担方式,可以将合同分为()。 ["有偿合同","诺成合同","无偿合同","双务合同","单务合同"]
以下行为不需要许可证的是() ["处方药的生产销售、批发销售","非处方药的生产销售、批发销售","处方药的零售","甲类非处方药的零售","乙类非处方药的零售"]
下列属于院内护士培训方法的是() ["全脱产学习","定期出国开会","专题研究","提高学历","自学"]
蛛网膜下腔出血最常见的病因是() ["高血压和脑动脉硬化","先天性脑动脉瘤","脑动脉粥样硬化","休克","心脏病"]
什么是珍珠层?