采用半圆试块调节焊缝探伤扫描比例时,如圆弧第一次反射波对准时基刻度2,则以后各次反射波对应的刻度为() ["4,6,8,10","3,5,7,9","6,10","以上都可以"]
与躯体和下肢相应的耳穴分布在()。 ["A、耳垂","B、耳舟","C、耳轮脚周围","D、耳甲","E、对耳轮体部和对耳轮的上、下脚"]
汽包干锅时要立即上水,以便尽快恢复汽包液位。
大额支付系统中,业务来账监控要监控哪些队列?() ["A、往账错误回执状态查询","B、未处理急报查询","C、未处理普通报查询","D、未授权报文查询"]
焊缝斜角探伤时,正确调节仪器扫描比例时为了:() ["缺陷定位","缺陷定量","判定结构反射波和缺陷波","以上A和C"]
铁路行车有关人员,接班前应做到哪些?