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【单选题】
无砟线路周期检修指根据线路及其各部件的变化规律和特点，对钢轨、道岔、扣件、无砟道床、无缝线路及轨道几何形位等按相应周期进行的全面检查和修理，以恢复线路完好（）状态。A.
工作
B.
质量
C.
技术
D.
计划
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【单选题】( )之间的关系,实质上是“共性发展”与“个性发展”之间的关系。
A.
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B.
国家课程与校本课程
C.
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D.
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