(2007•永州)近年来,国家实施“村村通”工程和农村医疗卫生改革,某县计划在张村、李村之间建一座定点医疗站P,张、李两村座落在两相交公路内(如图所示).医疗站必须满足下列条件:①使其到两公路距离相等;②到张、李两村的距离也相等.请你通过作图确定P点的位置.
考点分析:
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(2007•永州)解不等式组:
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,并在数轴上表示不等式的解集.
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(2007•永州)计算:|1-
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|-(1-
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)
+sin30°(
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-2-
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.
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D.
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D.
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