工作面和顺槽刮板输送机，应沿机安设有发出停止和开动的信号装置，信号点设置间距不超过10mm。
参考答案：错
They are getting ready ____ fly ____ England ____their holiday. [ ]
A. for; to; to
B. to; to; for
C. for; for; to
D. to; to; to
副梢
