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【单选题】32图 1 表示 pH 对 α 淀粉酶活性的影响,图 2 表示在最适温度及 pH 为 b 时 α 淀粉酶催化淀粉水解产生麦芽糖的积累量随时间的变化。相关预期正确的是 ( )
A.
．若将 pH 调整为 a ，则 d 点左移， e 点下移
B.
．若将温度升高 5 ℃ ，则 d 点右移、 e 点不移动
C.
．若将 pH 先调整为 c ，再调整回 b ，则 d 、 e 点不移动
D.
．若增加 α 淀粉酶的量，则 d 点左移， e 点上移
【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】Na + /K + 泵催化一分子ATP水解时,可同时()
A.
泵出3 Na + ，泵入2K +
B.
泵出3 Na + ，泵入3K +
C.
泵出2 Na + ，泵入3K +
D.
泵出2Na + ，泵入2K +