严禁往电器设备、电缆沟、电缆线路上乱丢油棉纱、木材及其它易燃易爆物品。
参考答案：对
– Who should be responsible for the accident?
– The boss, not the workers. They just carried out the order _____.
A．as told
B．as are told
C．as telling
D．as they told
离心泵的轴承温升不能超过（）。
（A）40℃
（B）50℃
（C）60℃
（D）70℃
