【单选题】
缓解感度试验时,制动管长度小于16m时,将单车试验器移置( )充气。(1.0
A. 1位
B. 2位
C. 3位
D. 4位
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答案
B
解析
暂无解析
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【单选题】
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DK-1型制动机属于( )。(1.0分)
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机车车辆换长等于它的全长除以( )。
A. 10
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