• 2021-04-14 问题

    如果有一个对象myListener(其中myListener对象实现了ActionListener接口),下列哪条语句使得myListener对象能够接受处理来自于smallButton按钮对象的动作事件?()

    如果有一个对象myListener(其中myListener对象实现了ActionListener接口),下列哪条语句使得myListener对象能够接受处理来自于smallButton按钮对象的动作事件?()

  • 2022-06-18 问题

    下列删除itcast数据库的sql语句中,正确的是( )。 A: DROP TABLE itcast; B: DELETE DATABASE itcast; C: DROP DATABASE itcast; D: DELETE FROM DATABASE itcast;

    下列删除itcast数据库的sql语句中,正确的是( )。 A: DROP TABLE itcast; B: DELETE DATABASE itcast; C: DROP DATABASE itcast; D: DELETE FROM DATABASE itcast;

  • 2022-06-07 问题

    ‍下面选项中,哪个可以正确创建一个名称为itcast的数据库?‍ A: CREATE BASE itcast; B: CREATE DATABASE itcast; C: Alter DATABASE itcast; D: CREATE TABLE itcast;

    ‍下面选项中,哪个可以正确创建一个名称为itcast的数据库?‍ A: CREATE BASE itcast; B: CREATE DATABASE itcast; C: Alter DATABASE itcast; D: CREATE TABLE itcast;

  • 2022-06-18 问题

    下面选项中,用于查看itcast数据库具体信息的是( )。 A: SHOW DATABASES `itcast` B: SHOW DATABASE `itcast` C: SHOW CREATE DATABASE `itcast` D: SHOW CREATE DATABASE `itcast`\G

    下面选项中,用于查看itcast数据库具体信息的是( )。 A: SHOW DATABASES `itcast` B: SHOW DATABASE `itcast` C: SHOW CREATE DATABASE `itcast` D: SHOW CREATE DATABASE `itcast`\G

  • 2022-06-18 问题

    下面选项中,用于查看名为itcast数据库具体信息的是() A: SHOW DATABASES itcast; B: CREATE DATABASE itcast; C: SHOW CREATE DATABASE itcast; D: SHOW DATABASES;

    下面选项中,用于查看名为itcast数据库具体信息的是() A: SHOW DATABASES itcast; B: CREATE DATABASE itcast; C: SHOW CREATE DATABASE itcast; D: SHOW DATABASES;

  • 2022-05-26 问题

    下列命令中,用于运行爬虫的是( )。 A: scrapy startproject mySpider B: scrapy genspider itcast "itcast.cn" C: scrapy crawl itcast D: scrapy crawl itcast -o teachers.json

    下列命令中,用于运行爬虫的是( )。 A: scrapy startproject mySpider B: scrapy genspider itcast "itcast.cn" C: scrapy crawl itcast D: scrapy crawl itcast -o teachers.json

  • 2022-06-07 问题

    在MySql命令中,用于切换到itcast数据库的命令是“use itcast”或“u test”

    在MySql命令中,用于切换到itcast数据库的命令是“use itcast”或“u test”

  • 2022-05-30 问题

    You issue these LSNRCTL commands:  LSNRCTL> SET CURRENT_LISTENER listener01 LSNRCTL> START listener02  What is the result of issuing these commands?() A: A listener named LISTENER is started. B: A listener named LISTENER01 is started. C: A listener named LISTENER02 is started. D: The START command fails and no listener is started.

    You issue these LSNRCTL commands:  LSNRCTL> SET CURRENT_LISTENER listener01 LSNRCTL> START listener02  What is the result of issuing these commands?() A: A listener named LISTENER is started. B: A listener named LISTENER01 is started. C: A listener named LISTENER02 is started. D: The START command fails and no listener is started.

  • 2022-06-16 问题

    通常我们使用( )方法来为一个部件注册事件监听器。 A: add×××Listener B: ×××Listener C: Listener××× D: ×××Listeneradd

    通常我们使用( )方法来为一个部件注册事件监听器。 A: add×××Listener B: ×××Listener C: Listener××× D: ×××Listeneradd

  • 2022-05-30 问题

    Anyone who knows just the host name and the listener name can have full control over the listener. They can stop the listener and also obtain detailed information about the listener, database, and the configuration of the application. How would you avoid this scenario?() A: lock the listener B: hide the listener C: create multiple listeners D: run listener on a remote client E: set a password for the listener F: store listener.ora in a non-default locatio

    Anyone who knows just the host name and the listener name can have full control over the listener. They can stop the listener and also obtain detailed information about the listener, database, and the configuration of the application. How would you avoid this scenario?() A: lock the listener B: hide the listener C: create multiple listeners D: run listener on a remote client E: set a password for the listener F: store listener.ora in a non-default locatio

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