皮皮学，免费搜题
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【单选题】
土体组成部分的压缩包括A.
土固体颗粒及空隙中水的压缩
B.
空隙中气体的压缩
C.
空隙中部分空气被挤出引起空隙缩小
D.
以上答案都对
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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