All railroads have weight and height________, because of tunnels, bridges and so

游客2025-01-19 29

问题 All railroads have weight and height________, because of tunnels, bridges and so forth.

选项 A、boundaries
B、restraints
C、confinement
D、limitations

答案 D

解析由于有隧道、桥梁等结构，所有的铁路都有通行重量和高度的限制。A项boundary“分界线，边界，界限”。B项restraint“抑制，克制；约束措施，约束条件”。C项confinement “关押；禁闭；监禁”。D项limitation“限制，限度”。

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