TB/T2658.21一2007标准对单探头法探伤时测距校准时,调节仪器测距,使屏幕水平满刻度应满足下列哪些条件( )
A.轨腰和轨头探测,仪器测距应不小于横波声程150mm,或轨腰不小于深度100mm,轨头不小于深度14mm B.轨腰和轨头探测,仪器测距应不小于横波声程250mm,或轨腰不小于深度200mm,轨头不小于深度60mm C.轨底探测,仪器测距不应小于横波声程125mm D..0°探头探测,不应小于纵波声程160mm E.0°探头探测,不应小于纵波声程200 mm正确答案BCE
TB/T2658.21一2007标准对单探头法探伤时测距校准时,调节仪器测距,使屏幕水平满刻度应满足下列哪些条件( )
A.轨腰和轨头探测,仪器测距应不小于横波声程150mm,或轨腰不小于深度100mm,轨头不小于深度14mm B.轨腰和轨头探测,仪器测距应不小于横波声程250mm,或轨腰不小于深度200mm,轨头不小于深度60mm C.轨底探测,仪器测距不应小于横波声程125mm D..0°探头探测,不应小于纵波声程160mm E.0°探头探测,不应小于纵波声程200 mm正确答案BCE