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[问答题,简答题] 齿轮传动的优缺点有哪些?

假性动脉瘤为() ["血管壁全层局部扩张","血管壁部分由纤维组织构成的局部扩张","动脉粥样硬化性动脉瘤","检查时有震颤并可听到连续性杂音","压迫动脉瘤出口部出现血压升高,脉压缩小及脉率缓的现象"] 关于先天性心脏病的X线表现,下列描述哪项不对() ["Ebstein畸形:右心房增大","肺动脉瓣狭窄:心腰消失","动脉导管未闭:右心房大小正常","房间隔缺损:主动脉结增大","二尖瓣关闭不全:左心室增大"] 禁用高压灭菌法的物品是() ["缝线","橡胶","金属器械","碘仿","玻璃制品"] 用灭菌王刷手,第1遍刷手需() ["1min","2min","3min","4min","5min"] 下肢静脉曲张的临床表现() ["大腿内侧及小腿外侧静脉曲张","大腿内外侧静脉曲张","全下肢内后侧静脉曲张","下肢内侧和小腿后侧静脉曲张","大腿内、外侧静脉曲张并向腹壁延伸"] 齿轮传动的优缺点有哪些?
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