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已知A点高程HA=72.445m，高差hBA=-2.324m，则B点的高程HB为（）。

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已知A点高程HA=72.445m，高差hBA=-2.324m，则B点的高程HB为（）。

A.74.769m

B.70.121m

C.-74.769m

D.-70.121m

参考答案:

答案：74.769m

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