管子与管板连接处的腐蚀裂纹主要分布在管板边、胀管区以及这二者之间的缝隙区。
参考答案：对
Your shoes_______. You’d better come to get them in half an hour.
A．are mending
B．have mended
C．are being mended
D．have been mended
放射性测井有什么独特性能？
