下列不支持缺铁性贫血的实验室检查是() ["平均红细胞体积降低","血清铁降低","血清铁蛋白降低","总铁结合力降低","转铁蛋白饱和度降低"]
]患者,男,47岁。右小腿患痈,脓液流出,1个月不愈。治疗应首选的药物是() ["A.砒石","B.升药","C.雄黄","D.硫黄","E.炉甘石"]
某化工厂周边居民,患肺癌的人数明显增加,说明污染对人体由() ["急性中毒","机体免疫力下降","儿童佝偻病的发生增加","变态反应","致癌作用"]
关于拔毒化腐生肌药错误的事() ["多具剧烈毒性","强大刺激性","严格控制剂量和用法","外用也不可过量","建议长期使用"]
内服劫痰平喘,外用蚀疮去腐的药物是() ["A.铅丹","B.升药","C.砒石","D.硼砂","E.炉甘石"]
简述在进行起重机械设计时应考虑的基本载荷。