问答题

机械使用费用可分成()

A.可变费用
B.人工费用
C.不变费用
D.材料费用

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固定资产投资分为()

A.基本建设投资
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单项选择题

Wallace Stevens' s poetry is primarily motivated by the belief that true ideas correspond with an innate order in nature. Many of his good poems derive their emotional power from reasoned revelation. This philosophical intention is supported by the titles Wallace Stevens gave to his volumes such as______.
A. Harmonium
B. Ideas of Order
C. Parts of a World
D. all of the above