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【单选题】
进侧线或临时限速时,机车牵引的列车按固定模式限速值+( )km/h确定紧急固定模式限速值。
A.
3
B.
5
C.
8
D.
10
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A.
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A.
discussing different approaches biologists have taken to testing theories about the distribution of plants in Hawaii
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