皮皮学，免费搜题
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搜题
【单选题】
下列哪项不是桥跨结构的作用是?A.
承受车辆和其他荷载。
B.
所保证桥跨结构所需要的位移和转动。
C.
跨越各种障碍物。
D.
保护路基。
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
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