http://sampleserver1.arcgisonline.com/ArcGIS/rest/services

http://services.arcgisonline.com/arcgis/rest/services

http://services.arcgis.com/V6ZHFr6zdgNZuVG0/arcgis/rest/services/

http://t0.tianditu.com/vec_c/wmts

http://t0.tianditu.com/img_w/wmts

http://t0.tianditu.com/cva_c/wmts

http://t0.tianditu.com/ter_c/wmts

http://t0.tianditu.com/cta_c/wmts