1. The time of skin purpura regression, the arthrodynia regression and the abdominalgia egression compared with the control group treated by prednisone has no significant difference(P>0.05);
2. Private cars can meet the townsman's demand of more frequent egressions, larger extents of egression, and higher egression quality with the result of benefit, convenience and comfort to the townsman.
3. Private cars can meet the townsman's demand of more frequent egressions, larger extents of egression, and higher egression quality with the result of benefit, convenience and comfort to the townsman.
