[单选题]

M点的高程为43.251m,测得后视读数为a=1.000m,前视读数为b=2.283m,则视线高Hi和待测点B的高程分别为()m

A . 45.534,43.251

B . 40.968,38.685

C . 44.251,41.968

D . 42.251,39.968

参考答案与解析:

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