系统为每一台设备确定一个编号,以便区分和识别,这个确定的编号称为设备的( )号由用户在程序中定义的设备编号称为设备的()号
No more having to buy expensive textbooks which you will only use for a year or two and then sell or _______ away.
You can _____ some bottles of wine, or some chocolates, or a bunch of flowers.
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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