The purpose of establishing duty lawyer is to realize the full coverage of criminal defense, and the duty lawyer system is a new development of legal aid system. However, the lawyer on duty is not a defender, but only enjoys certain legal help rights, and can provide legal advice, suggestions on program selection, applications for changing compulsory measures, and suggestions on case handling. Item a is wrong.
Because the lawyer on duty can give advice on the handling of the case, if the lawyer on duty knows that the criminal suspect and defendant have surrendered themselves and rendered meritorious service, it is justified to give him a lighter or mitigated sentence, and item B is correct.
The subject of criminal proceedings refers to the specialized state organs and litigants who participate in criminal proceedings. Specialized state organs mainly include public security organs, procuratorial organs and judicial organs. Participants in litigation include parties and other participants in litigation. Among them, the parties include victims, private prosecutors, criminal suspects, defendants, plaintiffs in incidental civil litigation and defendants in incidental civil litigation. Other participants in litigation include legal representatives, agents ad litem, defenders, witnesses, expert witnesses and translators. The lawyer on duty is not a defender, does not belong to the participants in the proceedings, and does not belong to the special organs of the state, so the lawyer on duty is not the subject of criminal proceedings. Item c is wrong.
The lawyer on duty has the right to make suggestions on the applicable procedures for criminal suspects and defendants, and item D is correct.