CompTIA認(rèn)證考試PD0-001單項(xiàng)選擇題每日一練(2019.01.22)

來(lái)源：考試資料網(wǎng)

1 A customer is concerned about excessive media jamming in their device. Which of the following is the FIRST thing a technician should check？（）

2 Which of the following items can be used as a discharge lamp？（）

3 Which of the following devices can route electrical signals only when activated by an external control signal？（）

4 Which of the following stages in the laser print process attracts toner to the latent image on the photoconductor？（）

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