48______
- A introduced
- B recognized
- C identified
- D considered
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1、______________________________________
______________________________________________________________________________Unabridged dictionaries contain as many as 500,000 entries and provide detail...
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48_______A leaveB cheerC believeD notice
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3、48______
48______A fromB roughC blackD smooth
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4、按照美国制定的光纤通信标准SONET,OC-48的线路速率是____Mb/s
按照美国制定的光纤通信标准SONET,OC-48的线路速率是____Mb/s.A41.84B622.08C2488.32D9953.28
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48__________.AgiveBserveCholdDhost
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6、典型软下疳初起为__________，24～48小时后迅速变成_______
典型软下疳初起为__________，24～48小时后迅速变成__________，3～5日后再变成__________。