威特N3型精水准仪微倾螺旋可以使水准轴和视准轴同时产生微量的变化。
参考答案：对
—How do you usually come to school, by bus or by bike?
—______. I walk. [ ]
A. Either
B. Neither
C. Both
D. Any
铺道时怎样散布轨枕？
