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[问答题,简答题] 如何减少LF电弧功率损失?

头孢菌素类用于抗绿脓杆菌感染药物是() ["头孢氨苄","头孢唑啉","头孢呋辛","头孢哌酮","头孢孟多"] 急性脊髓炎的治疗在急性期最应该采用() ["中药","抗生素","激素","大量维生素","血管扩张药物"] 下列有关氯丙嗪的叙述,正确的有() ["阻断中枢多巴胺受体","长期大量应用可产生锥体外系反应","对正常人体温无影响","可用于治疗高血压","可用于治疗巨人症"] 下述风湿性疾病中哪种无晨僵及对称性多关节炎症状() ["风疹关节炎","病毒性肝炎关节炎","类风湿关节炎","系统性红斑狼疮","风湿性关节炎"] 下列选项中,不属于卵巢非赘生性囊肿的是() ["黄体囊肿","卵泡囊肿","多囊卵巢","皮样囊肿","巧克力囊肿"] 如何减少LF电弧功率损失?
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