07ְơм÷ģ

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1.𰸡BC
ݡٲ÷涨ƽĹ񡢷˺֮֯䷢ĺͬ׺Ʋףٲá¾ײڡٲ÷ĵΧйصĻ໤̳оף飻Ͷ飻ũҵаͬסУƲ̳ойصļ̳оס
2.𰸡ABCD
νָȨΪĴΪ,Ȩڱ,ӦеķɺѡDZΡ
3𰸡AC
ѡĴڣûָȨʹޣӦΪ֮һʹѡĴǸԵģɳΪЧݼΪʼʱЧЧΪͬķɺ
4.𰸡ABD
ݡ˾Ĺ涨ɶڹ˾ǼǺ󣬲óسʡɶ֮໥תȫʻ򲿷ֳʡɶɶתóʱ뾭ȫɶͬ⣬ͬתõĹɶӦתõijʣתõijʣΪͬתá
5.𰸡BCD
6𰸡CD
ABڶ»ְȨ
7.𰸡AB
˺ͱǩ£ƱݱľԼƱݱԼδڵģΪƱݵǰ飬ԭƱݱ
8.𰸡ABD
ݡͬĹ涨δսͬԼĽ;ʹýģ˿ֹͣŽǰջؽͬ
9.𰸡BC
Ϸƶȹ涨ƱݶҸľϽһ󰸼ɱڵԺƱݶҸԺ
10.𰸡ACD
BѡΣȨҪָԭ״⳥ʧ
11.𰸡ABD
ݡ˶ҵĹ涨˶ҵǷǷҵͶ˱йȻˣԸμ»˶ҵͶ˶ҵծеΣеΡ
12.𰸡ABC
ݡ˾Ĺ涨ɷ޹˾ľиͲȨ»ʵʩȨ͹˾ڲ÷ƶȨ˾ƶȵƶȨڶ»ְȨھְȨΧ
13.𰸡BC
պͬϣɱסػ߱ձڵصԺϽ
14.𰸡ABC
ʱЧڼΪͨʱЧڼرʱЧڼ䣬ҹйطɡ涨˺Ҫ⳥ġƷϸġӸܸģرʱЧΪ1꣬ͨʱЧڼ䣬Ϊ2ꡣ
15.𰸡ABC
Ƕҵ˾ۺϲԣ˵DzͬҵʸաϻҵĹ涨ϻҵ޶ʸ񣬲ܶеΣڷǷҵ
16.𰸡BC
֤ȯ˾Աڻ߷ڣƱBϹ涨й˾չУչ˶еıչй˾ĹƱչΪɺ12ڲתáCϹ涨
17.𰸡ABCD
ݹ涨ƱƱϵǩ²Ϲ涨ģƱЧжˡ֤Ʊϵǩ²Ϲ涨ģΪˡΪƱǩµģǩЧӰϹ涨ǩµЧƱϵǩ²Ϲ涨ģǩЧӰǰַϹ涨ǩµЧ
18.𰸡ABC
⿼˹ɷ޹˾ٿʱɶᡣɷ޹˾ٿʱɶΣһ㡶˾涨߹˾³2/3ʱڶ˾δֲĿﵽɱܶ1/3ʱģ»ΪҪʱ壬»ٿʱ
19.𰸡ABD
ѡCΥйزϽɹ涨Ϊ
20.𰸡ACD
λúͶͶʡ⡢赣ȷʽ