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• 1??????GM??:???????????
• 2???????????????????
• 3?????????????:????????
• 4??????????????12???
• 5??????????????????????
• 6????????????????????!
• 7????????????:?????????
• 8????????????????????
• 9????????????????????
• 10?????????????????7???
• 11????????23????2???????
• 12???????????????:?????????
• 13?????????????????
• 14?????????,??????????40??
• 15??????????????
• 16??????????????????????
• 17????????????:????????????
• 18??????????????360°????
• 19??????????172?4.9???36.7?
• 20??2???????0.8%??????