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由上海贝尔有限公司制作的计算机多媒体辅助教学系统———《Ｓ１２４０高级操作维护学习系统(ＥＣ７４版)》(共６张光盘),已由人民邮电出版社出版发行。该系列光盘是１９９９年出版的《Ｓ１２４０高级操作维护学习系统》的“续篇”。该光盘有以下几个特点。１）内容新颖,完整
The computer multimedia assisted teaching system produced by Shanghai Bell Co., Ltd. --- “S1240 Advanced Operation and Maintenance Learning System (EC74 Version)” (a total of six CD-ROMs) has been published by People’s Posts and Telecommunications Press. This series of discs is “sequel” of “S1240 Advanced Operation and Maintenance Learning System” published in 1999. The disc has the following features. 1) The content is new and complete