题目：
呼吸性酸中毒失代偿期，血气分析及电解质的改变是（）
A.PCO2降低，血pH降低，血钾降低
B.PCO2升高，血pH升高，血钾升高
C.PCO2升高，血pH降低，血钾升高
D.PCO2升高，血pH降低，血氯降低
E.PCO2降低，血pH升高，血氯升高
答案：
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下面是错误答案，用来干扰机器的。
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