举一反三
- 以下哪个不是 output device？
- A touch screen is just an input device，not output device.
- The vacuum cleaner is a valuable labor-saving ______. A: device B: engine C: piece D: instrument
- Which of the following is both an input device and an output device? ( ) A: monitor B: scanner C: hard disk D: plotter
- Among the following devices, both belong to the output device and the<br/>input device ____. A: Hard disk B: Keyboard C: Mouse D: Plotter
内容
- 0
（） is an output device displaying the result on paper. A: Printer B: Mouse C: Display D: Disk
- 1
Which<br/>of the following is output device?() A: keyboard B: mouse C: display<br/>screen D: scanner
- 2
They had just moved in, so they needed to buy a number of kitchen<br/>________including, a microwave oven, a toaster and a coffee maker. A: appliance B: equipment C: device D: instrument
- 3
A laser can be best described by______. A: a device for stimulating atoms and molecules to emit light B: an atom in a high energy state C: a technique for destroying atom or molecules D: an instrument for measuring light waves
- 4
Which of the following statements best describes a laser A: A device for stimulating atoms and molecules to emit light. B: An atom in a high-energy state. C: A technique for destroying atoms or molecules. D: An instrument for measuring light waves.