问题:SIEMENSS7-300/400之PLC采用的编程语言主要有哪些?...
Saturday, March 4, 2023
问题:H级K型热电偶的测温范围为400℃以上,其允许误差为()。...
Saturday, September 17, 2022
Sunday, September 1, 2024
问题:管路支架的间距宜均匀,无缝钢管水平敷设时,支架间距为()。...
Saturday, September 17, 2022
Saturday, September 17, 2022
Saturday, September 17, 2022
问题:当弹簧管式压力表的示值误差随示值的增大成比例增大时,通常可调整(...
Saturday, September 17, 2022
问题:热电阻是根据电阻值随温度变化的性质,将()的变化用仪表显示出来,达到测温目的的。A、温度B、被测量C、电阻值...
Saturday, September 17, 2022
问题:在测定动圈仪表阻尼特性时,向仪表加入50%阶跃输入信号,而仪表的...
Saturday, September 17, 2022
Saturday, September 17, 2022
Tuesday, September 13, 2022
Saturday, September 17, 2022
Saturday, September 17, 2022
问题:仪表制造厂标定转子流量计时,测气体的是用()或()或()进行标定...
Saturday, September 17, 2022
问题:计算题:有一量程为16MPa的压力表,已知其精度为1.5级,试求...
Saturday, September 17, 2022
问题:因为弹性压力计不象液柱式压力计那样有专门承受大气压力作用的部分,...
Saturday, September 17, 2022
问题:调节阀理想流量特性主要有(),(),()及()等四种。...
Thursday, March 16, 2023
问题:根据1968年国际实用温标的规定,基准铂电阻温度计的纯度R100/R0应不小于();工业用的纯度R100/R0应不小于()。...
Saturday, September 17, 2022
问题:计算题:有一配热电偶的动圈式温度仪表,刻度盘上标有外线路电阻R<...
Saturday, September 17, 2022
Saturday, September 17, 2022