问题 问答题 简答题

当视线倾斜进行视距测量时,水平距离的计算公式是什么?

答案

参考答案:

水平距离D=S×(COSΑ)2

S—为斜距S=K(L上-L下),L为上下两横丝所对的水准读数,A—为竖直角。

问答题

如何评价秦始皇(或汉武帝、曹操、孝文帝等等)?

                                                                                                                                                            

                                                                                                                                                            

                                                                                                                                                            

                                                                                                                                                            

                                                                                                                                                            

                                                                                                                                                            

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