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操作栏是用来代替显示标题和应用图标和用户位置。
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Padding表示在组件的顶部、底部、左侧和右侧的空白区域。
人类社会发展的根本动力是( ) 正确答案:
Australia has a federal system of government, a dual government of federal and state power structure, each exercising its allotted powers independently of the other.
Australia is not independent because it still has constitutional links with Britain.
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