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下列反应的离子方程式错误的是 （ ） A ．硫酸反应Fe+2H + ＝Fe 2+ +H 2 ↑ B．铜跟浓硝酸反应Cu+2N0 3 - +4H + ＝Cu 2+ +2N0 2 ↑+2H 2 O C ．碳酸钙跟稀盐酸反应C0 3 2- +2H + ＝CO 2 ↑+H 2 O D ．氯化铁溶液反应Fe+2Fe 3+ ＝3Fe 2+
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【单选题】关于概率的说法,错误的一项是
A.
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B.
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C.
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E.
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