用两台经纬仪校正牛腿柱子的铅垂时,若正对牛腿面的经纬仪没有正安置在轴线上,将使()。
A.柱身铅垂
B.柱身倾斜
C.柱身偏转
D.柱身又倾斜又偏转
参考答案:D
正确处理人与自然的关系,不仅需要遵守人与自然的道德规范,还需要法律保障,依法保护大自然。[ ]
We were told that we should follow the main road _____ we reached the central railway station . [ ]
A. whenever
B. until
C. while
D. wherever