4.Èȹø£¬µ¹Èë2´ó³×ÓÍ£¬·ÅÈ뽪ĩ±¬Ïãºó£¬·ÅÈë×÷·¨2µÄÇཷ¡¢ºìÌð½·¶¡³´ÔÈ¡£
5.×îºó·ÅÈë×÷·¨2µÄÅ£Èⶡ¡¢Å£Í·ÅƽðÉ«Êß²ËÓñÃ×Á£¼°ËùÓе÷ζÁϳ´ÖÁÈëζ¼´¿É¡£