题目内容

什么是自动稳定器?它们能否消除经济衰退?

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当经济处于衰退时,美联储可以________联邦基金率,这可以________总需求,同时________实际GDP。

A. 降低;增加;减少
B. 提高;减少;增加
C. 降低;增加;增加
D. 提高;增加;减少
E. 降低;减少;减少

when you do the watch keeping in the engine room ,what should you be careful

why is quick closing valves important to in engine room machineries ?how are

The three basic components of a fire are chain reaction, heat, fuel, and ____.

A. carbon monoxide
B. oxygen
C. carbon dioxide
D. any gaseous substance

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