国防采购应立足于国内自主创新产品和技术,自主创新产品和技术满足()的应优先采购。 ["国防或国家安全需求","国防需求","国家安全需求","国家发展需求"]
某断路器型号为LW9-72.5/2500-31.5,下列描述正确的是()。 ["此断路器额定电压72.5kV","此断路器额定电流为2500A","此断路器热稳定电流为31.5kA","此断路器为户外六氟化硫断路器"]
“益火之源,以消阴翳”适用的病证是() ["阳偏衰","阳偏盛","阴偏盛","阴偏衰","阴阳两虚"]
床旁心电监护仪使用法的评估
治疗特发性血小板减少性紫癜阴虚火旺证,选用() ["犀角地黄汤","茜根散","玉屏风散","桃红四物汤","补阳还五汤"]
机械制图中的三种基本视图为为哪几种?