三级动火作业由所在（）填写动火申请表，经工地负责人及主管人员审查批准后，方可动火
A、工负责人
B、班组
C、作业人
D、安全员
参考答案：B
— What is the model plane like?
— Well, the wings of the plane are _____ of its body. [ ]
A. more than the length twice
B. twice more than the length
C. more than twice the length
D. more twice than the length
简述“三化”建设及相互关系。
