单项选择题
A.0~65535 B.0~1023 C.1024~65535 D.>65535
A.端口号与IP地址 B.URL与端口 C.IP地址与URL D.协议和计算机域名
A.showDocument(url) B.getAppletContext() C.getAppletContext().display(url) D.getAppletContext().showDocument(url)
A.IOException B.IndexOutOfBoundsException C.InterruptedException D.MalformedURLException
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