���ǵػƾơ������ؽ���ʹ�� ����ʥ����¼���� ���䷽�����ǣ����ˣ�45�ˣ��ɽ����ڣ�����ܺ���ع�Ƥ�����������Ƥ��30�ˣ��׿�24�ˣ�����60�ˣ���ػ�45�ˣ����1.5��� ���Ʒ�������ҩ�ֵ��飬�����ײ����������ھ����У��ƽ�4�޺�ȡ�� �����Ρ��������𣬹ؽ���ʹ�������μ��� ���÷���ÿ�տո�����1����������2���� ˵�����ƾ�������ζ����ֹ��
�ã½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½Ë¾Æ·ï¿½ï¿½ï¿½Ô´ï¿½ï¿½ï¿½ï¿½ï¿½ç£¬Ê¹ï¿½ï¿½Ç°ï¿½ï¿½ï¿½ï¿½Ò½ï¿½ï¿½ï¿½ï¿½ |