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[问答题,简答题] 管道吹扫时应达到怎样的质量标准?

男,20岁,癫痫发作4次。CT示脑实质多发高密度点状影和片状不规则低密度灶,部分低密度区呈0.5~1.0cm环形增强,最可能的诊断为() ["多发性硬化","结节性硬化","脑囊虫病","脑脓肿","病毒性脑炎"] 延伸卡环一般用于() ["近基牙松动,但又可保留的前磨牙","孤立前磨牙","最后孤立倾斜的磨牙","健康正常的基牙","游离缺失的基牙"] 早孕时常用什么方法估测胎龄() ["测量宫底高度、子宫大小","测量双顶径、头围","测量胎囊和头臀长度","胎儿腹围、股骨长径","胎儿胸围、腹围"] 如图,脊麻后最常见的并发症是() ["腰背痛","头痛","颅内感染","虚性脑膜炎","马尾综合征"] "五脏六腑之大主"是指() ["肝","心","脾","肺","肾"] 管道吹扫时应达到怎样的质量标准?
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