一起伤害案件的被告人和被害人对致伤工具和致伤人各执一词，无法统一，主要证人郑某的证言至关重要，由于郑某在侦查机关询问中三次作证有三种不同的证言，给案件的及时查处带来不利。我国法律明确规定单位和个人均有如实作证的义务，否则将承担相应的责任，其具体的权利、义? The defendant and the victim who injured the case together did not agree on the injured tools and the injured people. The testimony of the major witness Zheng Mou was of great importance. Since Zheng Mou testified in the investigation agency three times with three different testimonies, To investigate the case in a timely manner to bring adverse. Our law clearly stipulates that both units and individuals have the obligation to truthfully testify, otherwise they will bear the corresponding responsibility, their specific rights and righteousness.