Quits the program after prompting to save the current library , if necessary.

退出程序, 如需要,会提示保存当前代码库.

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Maintaining a current library of facility directives and other pertinent regulations pertaining to control tower operations.

维护现行雷达设备指令库以及适用于塔台管制的相关条例规章.

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Is Current Library Expanding?

是当前图书馆的扩展 吗 ?

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