问题
单项选择题
对位于堤顶或临水坡的陷坑，宜用（）回填。
A.防渗土料
B.沙子
C.石子
D.沙土
答案
参考答案：A
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对位于堤顶或临水坡的陷坑，宜用（）回填。
A.防渗土料
B.沙子
C.石子
D.沙土
参考答案：A
| 用方框中所给单词的适当形式填空。 | |
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