轻处理是在约()压力下对0.01%≤C≤0.05%这一类低碳、半超低碳钢的处理方法。 ["6.7~26.6kpa","≤5kpa","67pa","133pa"]
“IPCS系统”是指() ["行内小额支付系统","国内支付结算系统","总账系统","行内大额支付系统"]
配热电偶的动圈式仪表要有()在现场进行校验。 ["手动电位差计","旋钮式标准电阻箱","标准毫安表","毫伏发生器","恒流给定器"]
RH需要脱氢处理的钢种不多,仅()以上少数钢种。 ["X60","SPHD","硅钢","中碳钢"]
病案组成哪项除外() ["护理病案","住院病案","门诊病案","检验报告单"]
什么是挥发分?它对燃烧和对锅炉工作有何影响?挥发分中含有水分吗?