问题
单项选择题
In approximating costs，the estimator considers the possible causes of variation of the cost estimates，including （71）。
A．budget
B．plan
C．risk
D．contract
答案
参考答案：C
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In approximating costs，the estimator considers the possible causes of variation of the cost estimates，including （71）。
A．budget
B．plan
C．risk
D．contract
参考答案：C