默认情况下，PostgreSQL并不使用密码：它使用一个内部身份系统。
By default, PostgreSQL does not use passwords: It USES an internal identification system. Simply add.
在配置好逻辑驱动器之后，LUN配置窗口就会关闭，并将配置保存到Port Configuration窗口中的主机系统(默认密码是config)。
When the logical drives are configured, the LUN configuration window closes, saving the configuration to the host system in the Port configuration window (which has a default password of config).
这套WiFi系统默认使用WAP2协议，用户想要接入这个WiFi网络需要输入随机密码。
Default security is set to WiFi Protected Access 2 (WPA2), requiring users to enter a randomly chosen password to connect to the Internet.
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