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Factory Pattern: Factory Pattern is a frequently used pattern. Classes implemented according to Factory Pattern can generate instances of one of a group of classes according to the provided data. Usually, this group of classes has a common abstract parent class and implements the same methods, but these methods perform different operations for different data. First of all, we need to define a base class. Subclasses of this class implement methods in the base class through different methods. Then you need to define a factory class that can generate different subclass instances according to conditions. After getting an instance of a subclass, developers can call methods in the base class regardless of which subclass instance is returned.　　县委周书记让两个桑义州当面对质，结果是让县委所有的人更加云中雾中。正当周书记一筹莫展的时候，特委秘书马学文突然带伤出现。周书记和马秘书很熟，当即让他指证。桑义州怎么也没想到，马秘书居然指着他说：此人是混入特委的国民党特务！桑义州顿时身陷险境，同志们群情激愤，纷纷要求将他枪毙。……《笑傲江湖》电视剧可以说是完美还原了原著小说。16 Otolaryngology and oral cavity18. Command Mode　　悬疑、警悚、黑社会凶杀、正与邪的殊死愽斗……《锁定美军特使》讲的是抗日战争期间新四军以及国民党军队肩负的一项特殊使命。为了先营救到掌握军事机密的飞虎队飞行员，郑大勇带领新四军，与王江义率领的国民党营救队展开竞赛，不过经历重重困难，两支本为对手的部队由猜忌走向信任，由相互较劲走向合作。《锁定美军特使》展现了一段非常的岁月，一番悲壮的战斗，炮火之中的友情，生死线上的爱情。