作业未完,机具未全部下道,线路未恢复到()的条件时,不得撤除防护。
参考答案:放行列车
人体消化系统的下列器官中,不与食物直接接触的是( )
A.食道和大肠
B.肠和胆囊
C.胃和大肠
D.肝脏和胰腺
________many times, but he still couldn’t remember my phone number.
A.To be told
B.Told
C.Having been told
D.He had been told