题目内容

使用FTP中的()命令可以退出FTP状态。

A. ls
B. quit
C. get
D. put

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权利代位

Which statement is true?()

A class’s finalize() method CANNOT be invoked explicitly.
B. super.finalize() is called implicitly by any overriding finalize() method.
C. The finalize() method for a given object is called no more than once by the garbage collector.
D. The order in which finalize() is called on two objects is based on the order in which the two objects became finalizable.

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