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【单选题】
关于水的硬度,下列说法正确的是:
A.
水的暂时硬度是指硫酸盐、盐酸盐的钙镁浓度。
B.
水的永久硬度是指重碳酸盐、碳酸盐的钙镁浓度。
C.
总硬度高的水一定不适合酿造淡色啤酒。
D.
水的总硬度＝暂时硬度+永久硬度
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