菲利普斯曲线
A.具有负的斜率,这表明当失业率上升时,通货膨胀率会上升
B.具有负的斜率,这表明当失业率上升时,通货膨胀率会下降
C.是水平的,这表明当失业率上升时,通货膨胀率不变
D.具有正的斜率,这表明当失业率上升时,通货膨胀率下降
正确答案是B
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