对数函数求导

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军开始大规模入侵中华大地，一支日军小分队来到太行山区的一座小村庄，追捕一位受伤的八路军情报员。几位机智勇敢的孩子们刚成立了小飞虎队，他们救了八路军情报员，就这样被卷入本次事件。警察局刑侦科马科长被派来协助鬼子的搜捕工作，此时武工队也来支援寻找八路军同志。孩子们每日去山中给八路军同志送饭，引起了保长的注意...。A company president gets framed with a food-poisoning scandal and the only person who can help him is the evening cleaning-woman, who always seems to be at the right place at the right time.。