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【单选题】对于现实的非线性规划问题,求解难点在于( )
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【单选题】设有10种物品,它们的体积分别为:51,43,39,36,29,29,27,24,19,19,箱子的容积为100。则最多可以装入的物品的体积为( )
Write the right expressions according to the explanations.1. to make a great effort to achieve sth.2. to be the reason why sth. happens or begins to exist3. with the coming of an important event, person, invention, etc.4. to get as much advantage out of a situation, event, etc. as you can
对于DOM对象中O描述错误的是：（）
以下资源中,最重要、最核心的资源是()
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