Sunday, September 11, 2022
在液压系统中将机械能转换为液压能的能量转换元件,通常称作为()...
Sunday, September 11, 2022
Friday, September 16, 2022
工作条件不变的离心泵如流量,扬程超过需要,为节省功率,最佳的工况...
Friday, September 16, 2022
Sunday, September 11, 2022
真空沸腾式海水淡化装置壳体结合处漏气,可以用()来解决。...
Friday, September 16, 2022
Friday, September 16, 2022
Friday, September 16, 2022
关于双螺杆泵的下列说法中错误的是()A、既有密封型,也有非密封型B、泵缸不变,换用不同螺杆可获得不同流量C、从动螺杆靠主动螺杆通过压力油驱动D、可设计成能输送非润滑性和含固体杂质的液体...
Thursday, March 9, 2023
当压缩机状况和其它温度条件不变时,随着蒸发温度提高,制冷压缩机的...
Friday, September 16, 2022
工作正常的海水淡化装置,水垢最主要的成分是()A、硫酸钙B、碳酸钙C、氢氧化镁D、氯化钠...
Saturday, November 11, 2023
Sunday, September 11, 2022
气阀通常采用两根内、外旋方向相反的弹簧,其目的是()。...
Sunday, September 11, 2022
Saturday, September 17, 2022
Friday, September 16, 2022
Friday, September 16, 2022
Sunday, September 11, 2022
阀控式起货机液压系统中液压马达在调速时,泵出口处的溢流阀()。...
Sunday, September 11, 2022
Friday, September 16, 2022
采用直接蒸发式空冷器的集中式船舶空调装置,夏季在外界空气温、湿度...
Friday, September 16, 2022