（ ）：a device for storing information on a computer, with a magnetic surface that records information received in electronic form

单选题

The device used for preventing the passage of flames into enclosed spaces is called a ____.

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单选题

___ for computing ballistics tables for WW2, the ENIAC was the first device that could actually process information electronically.

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单选题

（ ）：a device for storing information on a computer, with a magnetic surface that records information received in electronic form

答案解析

单选题

Once a symbol or device is established for a valve or control, it shall be used for this type of unit throughout the manual.

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单选题

（ ）is a six bytes OSI layer 2 address which is burned into every networking device that provides its unique identity for point to point communication.

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