Thursday, September 15, 2022
Saturday, December 16, 2023
Thursday, September 15, 2022
下列()不属于电弧焊。A、埋弧自动焊B、埋弧半自动焊C、电渣焊D、气体保护焊...
Wednesday, November 22, 2023
仓库内外物资要()实物盘点一次,做到材料明细账、材料盘点表三项符合,并定期向部门领导报送库存材料盘存清单。A、每年B、每季度C、每半年...
Thursday, June 8, 2023
Thursday, September 15, 2022
当采用电动式补充加臭剂时,应先启动料泵,使料泵空转预热。...
Thursday, September 15, 2022
下列弹簧支撑架的()可以判断管道的受力情况。A、壳体B、底板C、弹簧D、位移指示板...
Saturday, October 29, 2022
LNG的储存方式:()是LNG气化站的主要设备,储罐分()、()两层,夹层填充珠光砂并抽(),减小外界热量传入,保证罐内LNG日气化率低于()。...
Thursday, August 24, 2023
Friday, August 4, 2023
Thursday, September 15, 2022
L-CNG加气机包含哪些阀门()A、电磁阀B、过滤器C、流量计D、安全阀...
Wednesday, January 3, 2024
若物体振动波形的数学表达式为x=20sin(628t+π/3),...
Thursday, September 15, 2022
()不是辅助靠泊系统的设备。A、激光传感器B、风速仪C、码头大屏幕D、视频监控系统...
Friday, September 22, 2023
Thursday, September 15, 2022
Thursday, September 15, 2022
现有三相异步电动机的三根电源线相序从左到右为A、B、C排列,下列...
Monday, September 12, 2022
滚动轴承的振动诊断方法包括有效值和峰值判别法、()法、()密度分析法(用峭度衡量)等。...
Saturday, October 29, 2022
Monday, September 12, 2022
Thursday, September 15, 2022