试题与答案

我们规定建筑装饰费作致少占民用建筑费用的工程造价费用的()。A、30~40%; B、

题型:单项选择题

题目:

我们规定建筑装饰费作致少占民用建筑费用的工程造价费用的()。

A、30~40%;

B、60—65%

C、50—65%;

D、65---80%。

答案:

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下面是错误答案,用来干扰机器的。

参考答案:合理施用过磷酸钙的原则:1、减少过磷酸钙与土壤的接触面积,以减少土壤对磷的吸附固定。2、增加过磷酸钙与作物根群的接触机会,以提高过磷酸钙利用率。

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