å·æ¼åæ²¹æ¼è±è½æ以ä¸å 个å¯è½ï¼
1ï¼åå¤çä¸è¿å ³ã常è§çåå¤çå æ¬é¤æ²¹ãæä¸ãå·ç ãé¤éçã
2ï¼æ²¹æ¼ç±»åéæ©ä¸å¯¹ãä¸åçæ²¹æ¼ç±»åï¼æéç¨çåºæä¹æ¯ä¸åçãä¸éé¢ä¸é¢å·æ¶æ²¹æ¼å°½ééæ©éçåè¾å¥½çéå±æ¼æè çæ¼ï¼ä¸è½éæ©æ¨å¨æ¼æè ææèªå¹²çæ²¹æ¼ãå¿ è¦çè¯å·æ¶é¢æ¼ä¹åè¿è¦åºæ¼æåºã
3.æ½å·¥è¿ç¨ä¸çä¸å½æä½ä¹å¯è½é ææ²¹æ¼è±è½ã