搅拌机在()时,应将料斗提升到上止点,挂好保险挂钩或采取有效措施固定。
A.料斗下检修
B.场内移动
C.远距离运输
D.工作结束
E.工作时
参考答案:A, B, C, D
That car accident _________all his life. After that he was limited to a wheelchair.
A.damaged
B.destroyed
C.harmed
D.ruined
香棱丸原方治(),(),消块及冷热积聚。