非均质堤防的浸润线,由临河水位、各测压管水位、()绘制。
A.背河出逸点或背河水面点
B.背河任一出水点
C.背河积水
D.地面
参考答案:A
Come and see me whenever ____.
A.you are convenient
B.you will be convenient
C.it is convenient to you
D.it was convenient to you
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