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꿼Ĵⲿ֣з󣬴пԷֿɼ룬ڶרҵ֪ʶѧϰջȫ桢ʵԭ⣬ҪԭһǶԿԵĹ򲻹ӣ˿ԵĻҪ󣻶DZȽȱӦԵļɡ

¾꿼ԵľУȽ׺ӣȽ׳ķ棬һзṩһЩӦԽ飬ο

һʲôɫıʴ

ȷҪʹɫɫɫīˮĸֱʻԲʴ⡱ʹ硰ɫīˮǦʡ⣬ΪЧ⡣кܶ࿼ʵҵеϰߣڸĿáʡǦʡ⡣漰Ҫԡ֡Ӧ֣ȡ´ʽ

1 ǰӡʾ

2 ӡ ʾ

3 ֺӡ֣ʾ

漰ƵУʹǦдDzġ

ڹ涨ط⼰д

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һ

Ծз֣ijЩҪڸ£жϻҵֻͬͬҪһָд֪ʶղʵ߶ĿҪⲻ͸ÿһµĴʾᱻͬЧ𰸡

磺Ӧ˿ֽۿ£ۿڡۿյĴͬиۿ⣬ۿյۿ⴦ʾ

鿼Ӧ⡢ʵ⣬պôķʽ

ġڴʱд˳ŵ

ڸУڴ°˺ܶС⣬ʱֲд˳ţԱ˳ţҺܶ඼û˵¿Ϊץʱ䶼ѡĿʾ˳ʹԱжϿشһʡĿĸ֮໥¡ЩڡĿļ⡢ʵ񡷵ĻƷ¼÷ļбȽձ顣

鿼ʱӦĿҪд˳ţĴӦдӦĿ˳£ڿֻмʱΪҪ

塢ڸĿ͵ľҪ

ڸĿǰ棬ʾ˱͵һЩҪ£

ǷֿڴУڹעĿеҪ󣬺ٶԴǰҪ⣬δջҪ⡣ʾҪм̵ģûм̣ҪСԺλģûаҪƷ¼ûаҪдһϸĿ

鿼ھʱһҪעÿЩҪ󣬲Ҫ⡣

ڡơ˵

ܶĿԼĸʦֹ۵㣬ʱƣдپд٣֪ʶձȽϺõĿǡڱûе׿ǡ㡱ʵ䷴áڻʵУķ¼ȷ¼ھ÷Уɵǰìܣõ෴Ľۡ

鿼ʱмDzҪⷢӣְƿԵб׼Ƿdzϸ񣬲ijЩдĶ࣬Ϳ鿼Ǽӷֵ

ߡڡʵ񡷿ĿмӦע

۳мʵҪͣ⡱͡ۺ⡱Ӧرע⣺

1 Ӧмһʵ漰⣬Ҫг̣Ϊ

Ҫ˼зģڻϼdz򵥣Ϊӡˣܶ࿼˼̣һλóܹȷģô̡ķԻãֻнûм̣Ҽôûκηй̲ȷִֻôԵõ̵Ӧ

鿼Ҫг̵ļ⣬һҪʾ̣ҪΪǼ򵥵ļӡͿԺӡ

2 ƻƷ¼Ӧעⷽ

ٻƷ¼Ҫء򡢿Ŀơȫ߱ȷԭȱһһȷûƷ¼Ͳȷλʾá Dr Cr ʾ

ĿҪдϸĿרģ뾫ȷϸĿר

۸ϻƷ¼ͼ򵥻Ʒ¼ıƣܶͬҵԲñһϻƷ¼ɣҲԲñƶ򵥻Ʒ¼ɣڴʱִʽԡڱƸϻƷ¼Ǽ򵥻Ʒ¼ĺϲһϻƷ¼ķǼ򵥻Ʒ¼ܺͣˣһûУƼ򵥻Ʒ¼Լ͸֣÷ʾˡ

ĿҪĩת룬漰Ӫҵ롱ҵ롱Ӫҵ롱˻ 3 ֡ôƸϻƷ¼ô÷¼ 3 ֣Ծ֣һûУ 3 ʼ򵥻Ʒ¼ÿʷ¼ 1 ֣Լʾ͸֡

鿼ʱܹü򵥻Ʒ¼ʾͲҪƸϻƷ¼

ˡڡ÷ĿмӦע

1 ⡱жжϵı

÷ĿС⡱һкܶСÿжϣǿ׳ĵط£

١ͳжϡԼжϼΪԻ£ͳشΪȫԡȫ

ڡжϡڶԴ𰸰ղǺȷ£ȡ˺ıʽ硰ȫԡ򡰲ȫҲеΪĿʣһԡһжʱҲȡʽ

ֱʽDz淶ġ鿼ʱӦѭжϣ˵ɡȷÿһʵжϽ˵ɡмDzɳģɵжϣ׼ֻСȷ͡󡱵ֽ

2 жϺɵıӦȷ

ڼ⡢ۺУĿл϶ҪȻ˵ɣ൱ֿݣԷڡжϡ֣ڡɡ֣жϵķֵɵķֵDzͬġ

鿼ԭӦȷжϣȷ򡰴󡱻򡰺ϷΥ˼ٽһɡ

šڡĿӦע

1 ԡжϡѡ񡱡ۡȵı

ڡĿУйءѡijijߡĿٶԼַ߽ѡʱҲơ÷Ŀжͳģʽ硰áСȡ

鿼ӦжϡҪѡбȽϣ硰 A ã C Σ B ߡ A C ã C B áȣҪááߡСС֮ģı

2

Ŀⲿ֣漰ĵطdz࣬ط⣬Ҫʾ̣ˣҲӦע⾡ʾ̡


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