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【简答题】
______ is a homogeneous mixture of chemically distinct substances that forms a phase. The components (substances) lose their individual identities. A) Alloy B) Solute C) Solution D) Solvent
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反馈参考答案：
举一反三
【判断题】置openfiledialog1引用一个openfiledialog对象,则打开该对话框的正确代码是openfiledialog1.show();
A.
正确
B.
错误
【单选题】变量openFileDialog1引用一个OpenFileDialog对象.为检查用户在退出对话框时时否点击了'打开'按钮,应检查openFileDialog 1.ShowDialog()的返回值是否等于()
A.
DialogResult.OK
B.
DialogResult.Yes
C.
DialogResult.No
D.
DialogResult.Cancel
【单选题】若有一个打开文件对话框对象openfiledialog1,则打开该对话框的正确代码是( )。
A.
openfiledialog1.show();
B.
openfiledialog1.showdialog();
C.
openfiledialog1.open();
D.
openfiledialog1.openandshow();
【单选题】下列设置打开文件对话框OpenFileDialog1的Filter属性正确的是_________。
A.
OpenFileDialog1.Filter=Pictures(*.Bmp)|*.Bmp
B.
OpenFileDialog1.Filter=["Pictures(*.Bmp)"|"*.Bmp"]
C.
OpenFileDialog1.Filter="Pictures(*.Bmp)|*.Bmp"
D.
OpenFileDialog1.Filter={Pictures(*.Bmp)|*.Bmp}
E.
OpenFileDialog1.Filter=(Pictures(*.Bmp)|*.Bmp)
【单选题】以下正确的语句是____。 A.OpenFileDialog1.Filter=AllFiles|*.*|Pictures(*.Bmp)|*.Bmp B.OpenFileDialog1.Filter="AllFiles"|"*.*"|"Pictures(*.Bmp)"|"*.Bmp" C.OpenFileDialog1.Filter="AllFiles|*.*|Pictures(*.Bmp)|*.B...
A.
A
B.
B
C.
C
D.
D
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