CompTIA认证考试PD0-001单项选择题每日一练(2019.01.13)

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1 Which of the following would be the BEST process for the technician to follow when beginning to diagnose a unit at a customers site？（）

2 A polygon mirror is part of which of the following assemblies？（）

3 Scheduled preventative maintenance visits should be carried out：（）

4 Which of the following is the purpose of a torque limiter in a roller？（）

5 An encoder sensor typically detects：（）