禁止作业人员擅自移动或拆除遮栏（围栏）、标示牌。因工作原因需短时移动或拆除遮栏（围栏）、标示牌时，应有人监护。完毕后应立即恢复。
参考答案：对
At last the boy had no choice but ________ the bread from the supermarket. [ ]
A. admit to have stolen
B. admit having stolen
C. to admit to have stolen
D. to admit having stolen
叙述CRH2动车组辅助电源电路基本原理？
