治疗脾胃虚寒所致的便血,宜选用() ["补中益气汤","黄芪建中汤","黄土汤","理中汤","十全大补汤"]
新生儿光疗。
锐利器械的消毒宜用() ["煮沸消毒","化学药液浸泡","火烧法","蒸笼消毒","高压蒸气消毒"]
甲沟炎,甲下积脓宜采用的手术方法是() ["两则甲沟纵形切口","甲根部横切口","拔甲术","一侧纵切口","切除甲根部"]
下列属于基因运载体所必须具备的条件是()①具有某些标记基因②具有环状的DNA分子③能够在宿主细胞内复制④具有多种限制性内切酶 ["①②","③④","①③","②④"]
空气预热器A级检修项目有哪些?