编号问题选择A选择B选择C选择D答案注解1"Onalargedieselengineinstallation,crankshaftaxialalignmentismaintainedbythe________."pistonrodguidesenginethrustbearingcrossheadbearingmainshaftflexiblecouplingB在大型柴油机安装中，曲轴靠推力轴承保持轴向对中。2"Adieselengin...

时间:2024-11-19 09:17栏目:行业资料