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最佳答案:假设有A、B、C三种货车,分别每次可装运1件、2件、3件集装箱,设A、B、C分别出X、Y、Z辆车,则有:①式:X+Y+Z=20 ②式:X+2Y+3Z=50②-①
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最佳答案:our company's quotation and specification list as below:7-8 tons can be fill to
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最佳答案:答案如图...
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最佳答案:1.We will order a container definitely at least for the first order.2.The specif