A.極坐標(biāo)法B.坐標(biāo)法C.高斯坐標(biāo)D.水準(zhǔn)網(wǎng)
A.1:500~1:300B.1:500~1:200C.1:500~1:150D.1:500~1:2000
A.1999B.2000C.1985D.1895