ѡ
1.ȷ𰸡ABCD
𰸽һ£ЯƷƶЯΪˣԷƶӦĽÿΪˣʵݷʽƷƶռΪˣʵݻ䷽ʽƷƶļ˻Ϊˡ
2.ȷ𰸡ABD
𰸽CӦǰղʵʩ˰˰
3.ȷ𰸡BCD
𰸽ڹ˰Ϊݹ˰ʡЭ˰ʡػ˰ʡͨ˰ʡ˰˰ʹ˰ʣһʱڿʵݶ˰ʣA˰ʵһ˰ʣ20%-40%BǶԵġڻӦ˰걨ڻ֮߳ʵʩ˰˰һCȷڻIJ˰˰øýڻԭ걨ڻ֮߳ʵʩ˰ʣD
4.ȷ𰸡AD
𰸽ѡBΪڻӦԺ۸Ϊ˰۸ѡCΪܾڵĻһڻ۰취Ĺ涨˰۸
5.ȷ𰸡ACD
𰸽ز걨۸չ涨˰۸ʱΪúʵͬƽڻijɽ۸ڻշ˽м۸̡ڻշ˿룬Ҫؾȷڻ˰۸˵Ϊȷڻ˰۸ҪƳ۾ʱڻշ˿ṩȡضʵееĻӦԾ֮߱90ں˲ϣ˲֪ͨڻշˡ
6.ȷ𰸡BCD
𰸽ػ˫֮ϵӰɽ۸ʱӦ潫ɵɸ֪ڻշˣҪʽһ˵ṩϻ֤ݣ֤˫֮ĹϵδӰɽ۸Ժ֪֮ͨ15ڣڻշδṩһ˵ṩϻ֤ݺɻ˫֮ĹϵӰɽʱؿԲ걨۸ձ취ʮһڶʮһڻĺع۷涨˰۸
7.ȷ𰸡AB
𰸽ҹڹ˰涨Գڻ˰۸ԭǣڻ˰۸ɺԸû۵ijɽ۸ΪȷӦлصװǰ估طáշѣаijڹ˰˰Ӧ۳ڻijɽ۸ָû۵лʱʵӦļ۸ڻijɽ۸к֧ӶģӦ۳
8.ȷ𰸡ABD
𰸽ڹ˰˰˵־ص֮ķã˰۸Ϊ˫ľ֧Ӧ˰˰۵IJ֡
9.ȷ𰸡ABC
𰸽ض˰ƽƷмרƷƶԾʡӹóײƷ߾óʡ˰ڻڼӹڻͽ豸ȡ
10.ȷ𰸡BC
𰸽˰Υع涨©Ĺ˰˰Ӧ˰֮3ڿ˰Υع涨ɵ©˰Ӧ貹Ϊ˰Ʒ֮1ڡ
