高速前进中的船舶风向来自正横后,其偏转趋势一般为:() ["船首转向下风,使船尾迎风","船尾转向下风,船首迎风转","无论怎么转,最终将成为正横受风","保向容易,即使强风中也一样"]
一般情况下,裂纹处理消除后应进行()检查。 ["A、无损探伤","B、表面打磨后渗透","C、磁粉探伤"]
带压抽堵盲板时高、焦炉煤气的最高压力是多少?
船舶前进中受正横后来风的偏转规律是:() ["左舷来风,船首右偏;右舷来风,船首右偏","左舷来风,船首左偏;右舷来风,船首左偏","左舷来风,船首右偏;右舷来风,船首左偏","左舷来风,船首左偏;右舷来风,船首右偏"]
船舶前进中受正横以前来风,出现船首下风偏转的主要条件是:() ["空载、航速较低","空载、航速较高","满载、航速较低","满载、航速较高"]
AM450一氧化碳检测仪最大量程在实际测试中是多少?