工作结束后应进行作业场所检查，为什么不得将工作服放在设备上？
参考答案：工作服放在设备上，焊机余热可能引燃衣服造成火灾。
All the people in the nation can remember exactly how many years ago _______ the civil war broke out.
A．was it that
B．it was when
C．it was that
D．was it when
2015年“渝新欧”出口货值占（）
A.0.6
B.0.7
C.0.8
D.0.9
