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browsing C. more reliable to work in times of emergency or disaster as they do not suffer from network overload as has been proven many times. For this reason, they are still very popular with emergency service personal, medical personal, and information technology support staff.】 Since 1990, pagers have started to bee (98) than before. Pagers are the ideal solution for (99) .It has been proven many times that (100) .(98)A. more popular messaging. Unlike many other mobile munications. Today, phones in 1990s, pagers● 閱讀下面的短文,回答98~100題 【Until the ● A satellite system is posed basically (97) a satellite in space and many earth stations on the ground which links to it.(97) ● Early cellular systems were (95) .They operated by directly modulating a voicewaveform on a carrier and transmitting cell phones in the same cell were assigned different carrier frequencies, and adjacent cells used different set of (96) .(95) Spreading Modulation● The Hertz is used as a unit to measure (93) .(93) System for Mobile munications Channel Measurement(91) Coded Modulation ● (90) 主要對(duì)處理機(jī)進(jìn)行管理,是操作系統(tǒng)的核心功能?!?計(jì)算機(jī)軟件是由系統(tǒng)軟件和應(yīng)用軟件構(gòu)成的, (89) 是系統(tǒng)軟件。 語言 ● (87) 的內(nèi)容可隨機(jī)存取,斷電后所保存的信息會(huì)丟失。 (ID) 、控制器 、寄存器 ● 人們通常是按照計(jì)算機(jī) (81) 對(duì)其發(fā)展進(jìn)行年代劃分的。 (80) 這是 (73) 業(yè)務(wù)。(72) (70) (企事業(yè)單位) 支付 ● 下列業(yè)務(wù)中屬于智能網(wǎng)業(yè)務(wù)的是 (69) 。