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[问答题] 简述磁光记录的记录与读出原理。 

女,48岁,因宫颈癌行腹腔镜下子宫切除+盆腔淋巴结清扫术,术后次日出现左侧腰痛,未重视,术后10天自阴道中不间断流出淡黄色液体,量多,同时存在正常分次排尿。该患者明确诊断后应如何处理() ["A.半年以后进行手术治疗","少饮水,减少尿量","口服抗生素至漏液停止","留置导尿,充分引流尿液","立即手术处理"] 羊膜腔穿刺用于产前诊断应在妊娠何时进行() ["12~16周","16~20周","20~24周","24~28周","26周以后"] 疫毒痢的治法是() ["清热解毒化湿","活血解毒和胃","凉血清热利湿","清热利湿和胃","清热凉血解毒"] 下列除哪条外均为痉证的病因() ["湿邪","寒邪","风邪","暑邪","热邪"] 男,30岁,从2米高处跌落,左腰部着地,伤后腰痛并有肉眼全程血尿,有小血块,查:BP110/70mmHg,P100次/分;左腰部青紫压痛,腹部无压痛反跳痛。该患者进行检查,下列哪项不作为常规项目() ["A.B超","静脉肾盂造影","腹部X线平片","CT","肾动脉造影"] 简述磁光记录的记录与读出原理。 
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