选择员工业务单位的正确类别或子类。

Select the correct class or subclass for the employee's business unit.

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接下来的一种基本结构是子类型或row类型。

The next basic structure is the subtype or ROW type.

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从现有控件类或其子类扩展你自己的类。

Extend an existing View class or subclass with your own class.

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从现有控件类或其子类扩展你自己的类。

Extend an existing View class or subclass with your own class.

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