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什么是滞胀？在什么情况下会产生滞胀？

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After installing a new hydraulic pump in a system, what special attention should be given

A. The relief valves in the system should be readjusted
B. The filters and strainers should be checked frequently
C. All system pressure should be readjusted
D. The system should be drained and renewed with a fluid of different operating characteristics

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政府增加税收，对总需求会产生什么样的影响？

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如果石油的价格上升，________。

AD曲线向右移动，实际GDP增加，价格水平上升
B. AS曲线向左移动，价格水平上升，实际GDP下降
C. AD曲线和AS曲线向左移动，实际GDP下降，价格水平上升
D. AD曲线和AS曲线向右移动，价格水平上升，实际GDP下降
E. AS曲线向左移动，价格水平上升，实际GDP上升

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The additional mark______in the Classification Certificate for Machinery represents the

A. BRC
B. MCC
C. AUT-0
D. AUT-l

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