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谷子千粒重为2.6g左右

A. 正确
B. 错误

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泵赋于（）流体的外加能量称为泵的扬程

A. 每公斤
B. 每立方米
C. 每牛顿
D. 每克

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自我监督在健美操锻炼中的意义是什么？

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目前啤酒厂的糖化锅中利用（）进行搅拌。

A. 圆盘平直叶涡轮搅拌器
B. 螺旋浆式搅拌器
C. 醪液内二氧化碳的密度梯度
D. 二折叶旋桨式搅拌器

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You create a Web Form that displays a GridView. The GridViews data source is a DataSet named dsOrders. The DataSet contains two DataTables named Orders and OrderDetails. You create a relation between the two DataTables using the following code segment. (Line numbers are included for reference only.)01 dtOrders = dsOrders.Tables[“Orders”]; 02 dtOrderDetails = dsOrders.Tables[“OrderDetail”]; 03 colParent = dtOrders.Columns[“OrderID”]; 04 colChild = dtOrderDetails.Columns[“ParentOrderID”]; 05 dsOrders.Relations.Add(“Rell”, colParent, colChild, false); You need to find the cause of the exception being raised in line 05. What should you do? （）

A. Ensure that the child column and the parent column have the same names.
B. Ensure that the child table and the parent table have the same names.
C. Ensure that the child column and the parent column have the same data types.
D. Ensure that each row in the child table has a corresponding row in the parent table.
Ensure that the tables have an explicit relationship defined by a foreign key constraint in the database.

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谷子千粒重为2.6g左右

A. 正确 B. 错误

泵赋于（）流体的外加能量称为泵的扬程

自我监督在健美操锻炼中的意义是什么？

目前啤酒厂的糖化锅中利用（）进行搅拌。

A. 正确
B. 错误