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【单选题】
影响道床路基稳定的施工作业，基床换填封锁施工放行列车条件，小型养路机械捣固，开通后至次日捣固后第二列限速（）Km／h。A.
45
B.
60
C.
80
D.
120
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【简答题】The wordtail once referred to “the tail of a horse”, but now it is used tomean “the tail of any animal.” This is an example of-________.A. widening of meaning B. narrowing of meaning C. meaning sh...
【单选题】The word tail once referred to 'the tail of a horse', but now it is used to mean 'the tail of any animal.' This is an example of ______.
A.
widening of meaning
B.
narrowing of meaning
C.
meaning shift
D.
loss of meaning
【简答题】What is a core word, attribute word, and long tail keyword?
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