题型:问答题 简答题 下列相关反应的离子方程式书写正确的是A.氢氧化铁溶于氢碘酸:Fe(OH)3+3H+=Fe3++3H2OB.硫酸铜溶液显酸性:Cu2++2H2O=Cu(OH)2↓+2H+C.向碳酸氢铵溶液中加过量石灰水并加热:+OH-=NH3↑+H2OD.用酸化的高锰酸钾溶液氧化双氧水:2+6H++5H2O2=2Mn2++5O2↑+8H2O 查看答案
题型:问答题 简答题 Suppose elements in array A are already sorted ascending order of their values when the code begins to run, then execution time of the code will beA.O(log2B.O(C.O(nlog2D.O(n2) 查看答案