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【判断题】
物体在水中下沉,是因为物体没有受到水的浮力的作用。A.
正确
B.
错误
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【单选题】You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. You add a ListBox control to the application. The ListBox control is data-bound to an instance of a c...
A.
Implement the INotifyPropertyChanged interface in the Product class.
B.
Implement the INotifyCollectionChanged interface in the ProductList class.
C.
Set the Mode property of the Binding object of the ListBox control to TwoWay.
D.
Set the UpdateSourceTrigger property of the Binding object of the ListBox control to PropertyChanged.
【简答题】The Speed of filling is important. If it is , the casting will occurs the misruns and cold shuts (material solidifies before filling).
【单选题】What is the purpose of the objects traded in the Kula ring?
A.
They are used as currency to buy necessities
B.
They are a sign of status depending on the original owner
C.
They can be eaten
D.
They are used for building huts
【单选题】The Speed of filling is important. If it is , the casting will occurs the misruns and cold shuts (material solidifies before filling).
A.
slow
B.
fast
C.
bad
D.
good
【多选题】The Speed of filling is important. If it is slow , the casting will occurs the and (material solidifies before filling).
A.
misruns
B.
cold shuts
C.
shrinkage
D.
porosity
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