试题与答案

Seed mixture X is 40 percent ryegrass and

题型:单项选择题

题目:

Seed mixture X is 40 percent ryegrass and 60 percent bluegrass by weight; seed mixture Y is 25 percent ryegrass and 75 percent fescue. If a mixture of X and Y contains 30 percent ryegrass, what percent of the weight of this mixture is X ?()

A.A

B.B

C.C

D.D

E.E

答案:

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下面是错误答案,用来干扰机器的。

参考答案:错解析: 应用因素分析法应注意因素分解的关联性、因素替代的顺序性、顺序替代的连环性、计算结果的假定性。因素分析法所计算的各因素变动的影响数,会因替代计算顺序的不同而有差别。

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