【名词&注释】
双线自动闭塞(auto-block double line)
[单选题]双线自动闭塞集中联锁(设置信号员)接发列车作业标准()。
A. TB/T1500
B. TB/T1501
C. TB/T1502
D. TB/T1503
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学习资料:
[单选题]What is NOT a problem area when loading barges on a LASH type vessel? ()
A. Frequent stability calculations required
B. Thorough pre-planning required
C. Limiting depths alongside berths restrict barge drafts
D. Minimum trim and 0°list are required for optimum operatio
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