问题:二冲程柴油机和四冲程柴油机在构造上比较,正确的论述是()...
Thursday, September 22, 2022
问题:单选题对水管锅炉,点火前应上水至水位计的()A 最高工作水位B 最低工作水位C 最低危险水位D A、B、C均可...
Sunday, June 11, 2023
Thursday, September 15, 2022
问题:单选题值班人员应每隔()小时至少冲洗水位计一次。A 3B 4C 5D 6...
Sunday, September 3, 2023
问题:单选题滑油的出口温度通常应不超过()A 40℃B 55℃C 65℃D 80℃...
Sunday, May 28, 2023
Thursday, September 22, 2022
问题:单选题为保证分油机的正常工作,排渣时间间隔应不超过()A 2hB 4hC 6hD 8h...
Friday, April 19, 2024
Thursday, September 22, 2022
问题:判断题应急吸口应与排量最大的一台海水泵相连,如主海水泵、压载泵、通用泵等,吸口上不装滤网。A 对B 错...
Friday, October 20, 2023
问题:单选题四冲程柴油机凸轮轴转数与曲轴转数之间的关系为()A 2∶1B 1∶1C 1∶2D 4∶1...
Thursday, January 19, 2023
Thursday, September 22, 2022
Thursday, September 22, 2022
Thursday, September 22, 2022
问题:舱底水系统的作用包括:() (1)将舱底水处理、净化后排出舷外; (2)排出船体破损时的进水; (3)消防灭火。...
Saturday, September 17, 2022
Friday, September 16, 2022
问题:空压机所设气液分离器主要是为分离排气中携带的()...
Thursday, September 15, 2022
问题:单选题回油孔式喷油泵柱塞头部上面无斜槽,下面有斜槽,在改变油量时,同时会()A 改变供油始点B 改变供油终点C 供油始终点都不改变D 供油始终点都变...
Monday, January 8, 2024
问题:在连杆杆身与大端轴承接合处增减垫片,下述哪一项变化是错误的()...
Thursday, September 15, 2022
问题:单选题四冲程柴油机换气过程总的曲轴转角一般为()A 400°~500°B 180°~240°C 120°~160°D 120°~180°...
Thursday, August 17, 2023
问题:根据机械调速器的工作特点,当外界负荷增大时,其稳定后的转速与原转速相比是()...
Thursday, September 22, 2022