信息化就是在经济和社会活动中,通过普遍采用( )和电子信息设备,更有效地开发和利用信息资源,推动经济发展和社会进步,使由于利用了信息资源而创造的劳动价值在国民经济生产总值的比重逐步上升至占主导地位的过程。
Goods are carried by several of transport--on road or rail, by sea or air.
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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