帧中继技术主要用于传递()业务,它使用一组规程将数据以帧的形式有效地进行传送。
数据
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Hearrived____London____acoldwinternight.
Nearbyweretwoboats____theyhadcometothelonelyisland.
Ihopeyouwillspendasmuchtimeasyoucan________yourEnglish.
YourL/CNo.111for£2000issuedbytheBankLtd,Liverpool,has____.
Peopleinsomeareasdon’thavetopayfortheir______.