锯割时,无论是远起锯,还是近起锯,起锯的角度都要大于15°。
参考答案:错
With April 18’s railway speedup, highway and air transport will have competed with service for passengers.
A.good
B.better
C.best
D.the best
用全站仪测量高差时,其竖角范围是0°~360°。