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【单选题】
对于需要施旁站监理的施工关键部位、关键工序、施工企业进行施工前（ ）小时，书面通知项目监理机构。A.
12
B.
24
C.
36
D.
48
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反馈参考答案：
举一反三
【单选题】Value added is equal to the value of a firm's production minus
A.
all of its costs of production.
B.
labor costs.
C.
investment expenditures.
D.
intermediate goods used in production.
【简答题】简述室内空间类型
【单选题】The value added of an item produced refers to:
A.
a firm's profits on the item sold.
B.
the value of the labor inputs in the production of an item.
C.
the value of a firm's output less the value of its costs.
D.
the value of a firm's output less the value of the intermediate goods that the firm purchases.
【简答题】简述室内空间的分隔类型。
【单选题】If the domestic value added before an import tariff for a product is $500 and the domestic value added after the tariff is $550, the effective rate of protection is:
A.
5 percent
B.
8 percent
C.
10 percent
D.
15 percent
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