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【单选题】
有以下SQL语句：
SELECT 订单号,签订日期,金额 FROM 订单,职员
WHERE 订单.职员号=职员.职员号 AND 姓名="李二"
与如上语句功能相同的SQL语句是
A.
SELECT 订单号,签订日期,金额 FROM 订单
WHERE EXISTS (SELECT * FROM 职员 WHERE 姓名="李二")
WHERE EXISTS (SELECT * FROM 职员 WHERE 姓名="李二")
B.
SELECT 订单号,签订日期,金额 FROM 订单 WHERE
EXISTS (SELECT * FROM 职员 WHERE 职员号=订单.职员号 AND 姓名="李二")
EXISTS (SELECT * FROM 职员 WHERE 职员号=订单.职员号 AND 姓名="李二")
C.
SELECT 订单号,签订日期,金额 FROM 订单
WHERE IN (SELECT 职员号 FROM 职员 WHERE 姓名="李二")
WHERE IN (SELECT 职员号 FROM 职员 WHERE 姓名="李二")
D.
SELECT 订单号,签订日期,金额 FROM 订单 WHERE
IN (SELECT 职员号 FROM 职员 WHERE 职员号=订单.职员号 AND 姓名="李二")
IN (SELECT 职员号 FROM 职员 WHERE 职员号=订单.职员号 AND 姓名="李二")
参考答案：
参考解析：
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举一反三
【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
【多选题】在MRP计算中，计划订单的数量并不一定等于净需求量，经常要用一些方法进行调整，常用的方法有（）。
A.
固定批量法
B.
经济订货批量法
C.
直接批量法
D.
固定周期批量法
E.
安全库存量法