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【单选题】
已知298K时，Mg（OH） 2 的积常数Ksp=5.6×10 -12 ，取适量的MgCl 2 溶液，加入一定量的烧碱溶液达到沉淀溶解平衡，测得pH=13.0，则下列说法不正确的是（ ）A.
所得溶液中的c（H + ）=1.0×10 -13 mol?L -1
B.
加入Na 2 CO 3 固体，可能生成沉淀
C.
所加的烧碱溶液pH=13.0
D.
所得溶液中的c（Mg 2+ ）=5.6×10 -10 mol?L -1
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【单选题】患者女,76岁,晚期肝癌,治疗效果不佳,肝区疼痛剧烈,腹水,呼吸困难,患者感到痛苦悲哀,有轻生念头。随着病情发展,患者出现意识模糊,进而昏迷,护士采取的措施中错误的是
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widen the gap between the developed and developing countries
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impose an intolerable economic burden on residents of large cities
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A.
consume half of the oil produced in the world
B.
have serious consequences for the well-being of all nations
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