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BIM also has the function of quantity statistics to determine the amount of building materials used for preliminary cost analysis of construction units. The traditional method is that the construction management personnel fully understand the design intention and then convey it to the construction workers. Relatively professional terms and techniques are difficult for the workers to fully understand.本片讲述了1920年至1925年，青年邓小平赴法国勤工俭学期间发生的一系列曲折跌宕的精彩故事。表现了邓小平从艰辛坎坷中思考世界，逐渐成长为职业革命家的历程。同时还描写了邓小平和周恩来的相识与相知，展示他们在为共同的理想并肩战斗中结下的深情厚谊。郑氏道：只好慢慢查了。该剧改编自苏在原作家兼编剧的同名网络小说。讲述一个女生怀孕了，男友让她打掉孩子，她不管不顾跑到男友的妈妈家里，宣称要住到孩子出生，为了爱放弃了所有。而其实，男友的妈妈因为丈夫外遇，独自生活中，因此，她和男友妈妈展开了奇妙的同居生活。赵宝儿饰演性格开朗的大学生貞孝一角。未婚先孕但很有责任感，和剧中男友妈妈的扮演者蔡时那一起引领剧情的发展，诠释两个不同世代的女性相遇后的共鸣和情感。蔡时那饰演女主男友的妈妈，她在和丈夫分开后，一个人与世隔绝地生活着。直到儿子的女朋友出现，并且生活在了一起。李成宰饰演波音747机长韩尚振，一个因为一瞬间的失误导致人生巨变却依然为了尽到丈夫和父亲的责任而竭尽全力的角色。李俊英也将在剧中扮演重要角色。我们的先辈，一代代人用热血与不屈的精神，创造出最璀璨夺目，最瑰丽壮阔的国术。The principle of opening and closing means opening to expansion and closing to modification. When the program needs to be expanded, the original code cannot be modified, but the original code should be expanded to achieve a hot plug effect. Therefore, a summary of one sentence is: in order to make the program scalable, easy to maintain and upgrade. To achieve this effect, we need to use interfaces and abstract classes, etc. We will mention this point in the later specific design.