| ⒈ | | | | | | | | ⒉ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ⒊ | | | 20% 1 | | | | | | | 50 500 | | | | | 1 3 | | | 【 】 | | | | | | | |