题目内容

下列选项中，无法定义控件位置的属性是（）

A. center
B. bounds
C. frame
D. tag

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更多问题

A. text
B. textColor
C. textAlignment
D. font

A. applicationWillResignActive:
B. applicationDidEnterBackground:
C. applicationDidBecomeActive:
D. application: didFinishLaunchingWithOptions:

A. Bundle ID
Bundle Seed ID
C. App ID
D. UDID

A. UILabel
B. UIButton
C. UITextField
D. UISlider