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【单选题】
Your cheek is . Do you have a toothache?A.
struck
B.
sprained
C.
swollen
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反馈参考答案：
举一反三
【单选题】___ does not belong to the output devices .
A.
facsimile machine
B.
headset
C.
speaker
D.
microphone
【多选题】Which of the following are output devices?
A.
Keyboard
B.
Digital camera
C.
Printer
D.
Monitor
【单选题】which could be used both in output module and as output devices?
A.
Triac
B.
Relay
C.
Motor
D.
Transistor
【简答题】Many devices combine input and output devices.
【简答题】The hardware consists of and output devices, CPU and storage devices.
【简答题】Input devices / Output devices (输入设备/输出设备) --- connect the PLC to ________ and _________. --- they may be _______ a PLC or PLC may have _______ I/O modules.
【单选题】Typical output devices of a microcontrollerinclude ( ), LEDs, and LCD displays.
A.
relays
B.
sensors
C.
keyboard
D.
radio frequency devices
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