问题:液压舵机出现油缸爬行现象,引起的原因可能是()。...
Friday, September 16, 2022
问题:对液压舵机系统中的转舵机构、换向阀、油泵、油箱及油路系统,()都要进行检查。A、每航次B、每半年C、每年D、每9个月...
Tuesday, September 19, 2023
Sunday, September 11, 2022
Sunday, September 11, 2022
Friday, September 16, 2022
Friday, September 16, 2022
Friday, September 16, 2022
问题:二冲程增压柴油机的连杆在运转中受力状态是()。 ...
Sunday, September 11, 2022
问题:使用万用表时,如果测量直流电压时,应把选择与量程开关旋钮尖头对准...
Sunday, September 11, 2022
Saturday, August 12, 2023
问题:火警报警系统的火警探头可分为感温探头、感烟探头、感火焰探头三类。...
Sunday, September 11, 2022
问题:用石棉消防毯覆盖燃烧物表面,使可燃物与空气隔绝,此灭火方法属于隔离法。...
Tuesday, July 18, 2023
Friday, September 16, 2022
Sunday, September 11, 2022
问题:轻金属是固体,它引起的火灾也属于一般固体火灾。 ...
Sunday, September 11, 2022
问题:船舶证书的有效期届满时,要求展期应申请临时检验。...
Friday, September 16, 2022
Sunday, September 11, 2022
问题:船上发生病情比较严重的病人时,可采取下列哪些措施()...
Friday, September 16, 2022
问题:被热水及热油类烫伤后,下列哪种措施最好()A、立即将被烫部浸泡在冷水内B、应立即进行局部冷敷C、立即将被烫部位浸泡在海水内D、应立即涂抹烫伤药物...
Friday, December 16, 2022
Friday, September 16, 2022