下列哪一项与洋地黄中毒无关（） ["频发室性期前收缩","三度房室传导阻滞","黄视、绿视","恶心、呕吐","右束支传导阻滞"]
慢性再生障碍性贫血病人最常见的感染是（） ["败血症","上呼吸道感染","尿路感染","肠道感染","皮肤感染"]
治疗洋地黄中毒伴缓慢性心律失常时宜选用（） ["苯妥英钠","阿托品","普萘洛尔","呋塞米","利多卡因"]
下列哪项是引起继发性再生障碍性贫血较常见的病因（） ["药物及化学物质","物理因素","病毒感染","细菌感染","营养因素"]
心力衰竭并发心房扑动时首选（） ["普萘洛尔","普罗帕酮","奎尼丁","快速洋地黄制剂","胺碘酮"]
编制计量校准规范的一般原则是什么？
