题目内容

人与自然和谐相处，也就是说人类不能改造自然，不能修建水利工程()
参考答案：错误

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建筑结构中的基础是指建筑物地面以下部分的垫层。()

But ______ with players, executives, and young people, Ive learned that those who rise to

A. worked
B. working
C. having worked
D. had worked

Thermal expansion of solid is ______ detected by our naked eyes.

A. small so as not be
B. so small as not be
C. so small as not to be
D. such small as not to be

简述固定成本与变动成本的定义及特征