CompTIA认证考试PD0-001单项选择题每日一练(2019.01.14)

单项选择题
Which of the following failed components would be responsible for the fuser unit not heating properly？（）
A.Halogen lamps
B.Ball bearing
C.Hot roller
D.Pressure roller
单项选择题
An encoder sensor typically detects：（）
A.paper position.
B.shaft rotation.
C.magnetic flux.
D.laser beam strength.
单项选择题
Which of the following items can be used as a discharge lamp？（）
A.Halogen lamp
B.Light Emitting Diodes （LED）
C.Fuser lamp
D.Cleaning roller
单项选择题
Which of the following components is part of the ink dispersion system？（）
A.Print Heads
B.Cleaning heads
C.Pickup Roller
D.Charge Assembly
单项选择题
Which of the following devices can route electrical signals only when activated by an external control signal？（）
A.Solenoid
B.Relay
C.Clutch
D.Capacitor