动车组空心轴探伤作业应在专门的检查库内进行,要求的工作环境温度为()摄氏度。
A.1-20
B.3-35
C.5-35
D.10-40
参考答案:C
简述社会林业外部环境支持系统的主要内容。
Actually,information technology can_____the gap between the poor and the rich because all can get what they want at the same time.
A.break
B.1ink
C.bridge
D.combine