| | | ︹ ︺ | | | | | | 22 | | | | | | 【 】 | | | | | | | | | | | | | | | | | | | | | | ︹ ︺ | | | 22 30 | | | | 1200 \ | | | | | | | | | 22 1200 20%=5280 | | | | | 1 | | | | | | 2 | | | | | | | | | | | | | | | | | 3 | | | | | | | | | | | | | | | | | | | | | | | | | |