进行项目成本估算时,项目规划阶段的估算误差通常在()
A.
大于等于±50%
B.
大于等于±30%
C.
±30%
D.
±20%
正确答案是B
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Choose the closest paraphrased version after the following sentence or the italicized part.
If disappointed, though, she [my mother] wasted no energy on self-pity. She would make me make something of myself whether I wanted