[问答题,简答题] 胆石症患者为何晚间症状容易加重？

由远到近产生调节时引起双眼() ["A．内转","B．外转","C．上转","D．下转","E．瞳孔散大"] 每秒振荡次数称为超声的() ["A．周期","B．速度","C．波长","D．频率","E．时间"] 术后病人为什么易出现尿潴留，怎样预防处理？ 试述经皮肝穿刺胆道造影患者护理注意事项。 外界的平行光线一般认为与眼球相距() ["A．4m以内","B．4m以外","C．5m以内","D．5m以外","E．6m"] 胆石症患者为何晚间症状容易加重？