In consequence of mutual exclusion, radio buttons always come in groups of two or more, and one radio button in each group is always selected.
因为相互排斥，所以单选按钮总以两个或多个成组出现，而且每组中只有一个单选按钮可被选中。
A control ID for that radio button then appears in the add member variable Wizard, allowing you to add a member variable for the group of radio buttons.
该单选按钮的控件ID于是出现在添加成员变量向导中，这使您得以为单选按钮组添加成员变量。
A control ID for that radio button then appears in the add member variable Wizard, allowing you to add a member variable for the group of radio buttons.
该单选按钮的控件ID于是出现在添加成员变量向导中，这使您得以为单选按钮组添加成员变量。
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