决定病毒传染性的主要结构是()。 ["衣壳","核酸","包膜","刺突","子粒"]
附子反() ["白及","白芍","党参","五灵脂","京大戟"]
制备水不溶性滴丸时用的冷凝液() ["PEG6000","水","液状石蜡","硬脂酸","石油醚"]
藜芦反() ["白及","白芍","党参","五灵脂","京大戟"]
建筑施工单位对列入建设工程概算的安全作业环境及安全施工措施所需要费用,应当用于()用具及设施的采购和更新、安全施工措施的落实、安全生产条件的改善,不得挪作他用。
背景材料: