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刷刷题刷刷变学霸
举一反三
【单选题】某污水处理站采用二级处理工艺，进水量10000t/d，COD浓度为1500mg/L，一级COD去除率为80%，二级COD去除率为70%，则该污水处理站外排COD是（ ）
A.
0.45t/d
B.
0.90t/d
C.
1.80t/d
D.
3.75t/d
【单选题】有如下事件过程：Private Sub Form_Load() Show Dim Arr() As Variant Arr = Array(1, 3, 5, 7, 9, 11, 13, 15) Call converse(Arr) For i = 0 To 7 Print arr(i); Next iEnd Sub 以上程序的功能是，通过调用Converse过程，将数组Arr中的元素逆序存放并输出...
A.
Private Sub converse(dim a() as Variant ) Dim T For i = LBound(A) To UBound(A) T = a(i) a(i) = a(UBound(A) - i) a(UBound(A) - i) = T Next i End Sub
B.
Private Sub converse(dim a() as Variant) Dim T Dim J As Integer J = (LBound(A) + UBound(A)) / 2 For i = LBound(A) To J T = a(i) a(i) = a(UBound(A) - i) a(UBound(A) - i) = T Next i End Sub
C.
Private Sub converse(a() As Variant) Dim T For i = LBound(A) To UBound(A) T = a(i) a(i) = a(UBound(A) - i) a(UBound(A) - i) = T Next i End Sub
D.
Private Sub converse(a() As Variant) Dim T Dim J As Integer J = Int((LBound(A) + UBound(A)) / 2) For i = LBound(A) To J T = a(i) a(i) = a(UBound(A) - i) a(UBound(A) - i) = T Next i End Sub
【单选题】有时这个民族的某个或某些成员会酿出某些独特的心理, 往往由于禁忌、孤立等社会力量的威慑, 迅速销声匿迹, 陷于孤芳自赏, 很难挤进民族的共同圈子里去,除非有了变化着的共同生活做后盾。
A.
即使 也 不是 便是 而
B.
即便 却 不是 而是 而
C.
即使 却 不是 而是 却
D.
即便 也 不是 便是 却