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【单选题】
两站间同方向有两列车以上的列车,彼此间以几个闭塞分区相隔离而运行时,称:A.
间隔运行
B.
追踪运行
C.
相对运行
D.
运行时隔
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】The purpose of the last three paragraphs of the above passage is to
A.
describe the possibilities of further accidents.
B.
explain the perpetrator's reasoning behind committing the crime in this way.
C.
show in a veiled way who committed the crime.
D.
show how good the detectives are.
【简答题】Describe three methods in which adhesives develop their cured attraction between the substrate and the adherent.
【判断题】Six parameters are needed to describe a crystal system, including three angles and three lattice parameters.
A.
正确
B.
错误
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