A pretrial motion raising defenses or objections shall be determined before trial unless the court orders that it be deferred for determination at the trial of the general issue, but no such determination shall be deferred if a party's right to appeal is adversely affected. An issue of fact shall be tried by a jury if a jury trial is required by law. All other issues of fact shall be determined by the court with or without a jury or on affidavits or in such other manner as the court may direct. A verbatim record shall be made of all proceedings at the hearing, including such findings of fact and conclusions of law as are made orally.