2010ʦмκϰ⼰𰸣

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1.𰸡ABCD

ӪʽתֽͨתأֽתҪ棺תڡӦ˿תںӦ˿תڡ⣬ӪʽתܵծҪͳɱԼصԼ

2.𰸡ABD

ҵΪӦеֽҪȡһ棺һҵԸеյij̶;ҵʱծǿ;ҵֽԤĿɿ̶ȡҵˮƽҪӰҵĽ׶

3.𰸡ABCD

תɱҵֽм֤ȯԼתм֤ȯȡֽʱĽ׷ãֽͬм֤ȯ֮໥תijɱίӶίѣ֤ȯѣʵｻѵȡ

4.𰸡AB

ֽչĿǾջֽ𣬼ֽתҪ䷨ҵзȡ

5.𰸡ABD

Ӧ˿ɱļ㹫ʽ֪Ӧ˿ƽ䶯ɱʺʽɱӰӦ˿ɱ

6.𰸡ABCD

ӳޣһ̶ӶëʵӳޣҵһʹƽӳռӦ˿ϵʽӦӣɱ;ʧ˷õ;ͬʱṩۿۻʹֽۿ۳ɱӡ

7.𰸡BC

ģʽ۵Ҳֽйسɱ͡ЩɱУֽǹ̶ãȶֽͬĶٹϵڴģʽнΪ޹سɱ迼ǡֽǷᷢȱȱ١ʶԼֶȱηʱܵʧΣںܴIJȷԺ޷ԡˣôģʽֽѳʱԶȱɱҲ迼ǡڴģʽУֻԻɱתɱԿǡ

8.𰸡ABD

ָҵͻӹ֧ʱ޿ӵֽӳޣһ̶Ӧ˿Ļɱ

9.𰸡BC

ڴģ£ֻб䶯䶯ɱΪسɱ

10.𰸡BC

ٶ=ԭʹ×ԭϵ;ʱ䣬ʽԭʹָÿĵԭӹʽԿöÿζɱٶ޹ء

11.𰸡ABCD

ȱɱָڴܼʱҪҵʧ

12.𰸡ABCD

ʱĴϵͳĻԭǣֻʹ֮ǰŴӹӦ̴ӶԭϻĿٵС;ֻڳӵʱſʼӶƷĿ档ʱĴϵͳŵǽͿɱ;ٴӶļӹȴʱ䣬Чʡ

13.𰸡ABCD