___ is committed to installation, operation and maintenance of the communication infrastructures.
举一反三
- Fuel oil is thought to be one of the main factors （） the operation and maintenance of an engine.
- Maintenance workers should also possess communication skills.
- The sales service includes installation (安装) and training within one week of receiving the order. On the day of installation, our training engineer will your secretary, providing instructions on the operation of this easy-to-use photocopier (复印机). You may call us for help at any time in the future. If necessary, our trainer will go to your company to help you with the operation of the machine.
- Which of the following statement about maintenance are not true? 以下哪个关于维护的叙述不正确？ A: Maintenance programmers should have superb diagnostic ability. B: Maintenance programmers should have superb communication ability. C: Maintenance programmers should have superb cheating ability. D: Maintenance programmers should have superb testing ability.
- What are the main functions of Database Management System A: Establishment and maintenance of database B: Data operation C: Database security management D: Administration of database integrity