[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fwsnVLaZz6XqnEza_lLtorvly8jniCizhNwQkQ_U7I0Y":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":16,"related":17,"source":28,"type":29},[],"2023-09-09 20:12:39",96656516,[8,9,10,11],"触火面为压应力,水冷面为拉应力","两表面均为压应力","触火面为拉应力,水冷面为压应力","两表面均为拉应力",{"courseId":13,"courseImg":14,"courseName":15},"2119d4b5730a9cc5df130840b8c46fdb","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F48eba3395437dd881b1b9275a0ad1028.png","船舶柴油机","燃烧室壁面产生的热应力,其规律是_________",[18,30,39,48,54,63,72,81,90,99],{"answer":19,"createTime":20,"id":21,"options":22,"question":27,"source":28,"type":29},[],"2023-09-09 20:12:37",96656447,[23,24,25,26],"大缸径,少缸数","钻孔冷却,超长行程","小缸径,多缸数","大缸径,低转速","当代新型船用低速柴油机在结构上的特点大致是_________","v1",0,{"answer":31,"createTime":20,"id":32,"options":33,"question":38,"source":28,"type":29},[],96656448,[34,35,36,37],"红套曲轴","锻造曲轴","焊接曲轴","铸造曲轴","为了减轻曲轴的重量,现代曲轴制造工艺中的一项重要成就是_________",{"answer":40,"createTime":20,"id":41,"options":42,"question":47,"source":28,"type":29},[],96656449,[43,44,45,46],"②③④⑤⑥","①②③⑤⑥","①②④⑤⑥","①②③④⑤","柴油机提高行程缸径比S\u002FD后,对柴油机的影响有_________.①宽度、高度增加;②对混合气的形成有利;③机械负荷减小;④有利于弯流扫气;⑤对曲轴刚度要求高;⑥轴系纵振与扭振加重",{"answer":49,"createTime":20,"id":50,"options":51,"question":53,"source":28,"type":29},[],96656450,[52,46,45,44],"①③④⑤⑥","现代船用大型柴油机的结构特点有_________.①采用液压式气阀传动机构;②采用厚壁轴承;③燃烧室部件采用钻孔冷却结构;④采用独立的气缸润滑系统;⑤曲轴上增设轴向减振器;⑥焊接曲轴",{"answer":55,"createTime":20,"id":56,"options":57,"question":62,"source":28,"type":29},[],96656451,[58,59,60,61],"①②","①②③","①②③④","①③④","现代船用低速柴油机的发展特点有_________.①增大行程缸径比;②增大缸径,提高功率;③采用钻孔冷却;④等压增压",{"answer":64,"createTime":20,"id":65,"options":66,"question":71,"source":28,"type":29},[],96656452,[67,68,69,70],"②③⑥","①④⑤","②⑤⑥","①④⑥","现代船用低速柴油机的发展特点有_________.①增大行程缸径比S\u002FD;②提高转速,增大功率;③减小行程缸径比S\u002FD;④燃烧室采用钻孔冷却;⑤增大缸径,提高功率;⑥广泛采用等压增压",{"answer":73,"createTime":20,"id":74,"options":75,"question":80,"source":28,"type":29},[],96656453,[76,77,78,79],"燃烧室部件钻孔冷却","采用薄壁轴瓦","曲轴上装轴向减振器","采用铸造曲轴","下面对现代低速柴油机结构特点的叙述中,_________是不正确的",{"answer":82,"createTime":20,"id":83,"options":84,"question":89,"source":28,"type":29},[],96656454,[85,86,87,88],"曲轴上增设轴向减振器","增大行程缸径比S\u002FD,使燃气膨胀更加充分","增大喷油提前角,提高爆发压力以降低油耗","采用焊接式曲轴","关于现代柴油机的特点,说法错误的是_________",{"answer":91,"createTime":20,"id":92,"options":93,"question":98,"source":28,"type":29},[],96656455,[94,95,96,97],"比较笨重","可靠性好","寿命长","中、高速强载的柴油机普遍采用这种结构","以下不是十字头式柴油机主要特点的是_________",{"answer":100,"createTime":20,"id":101,"options":102,"question":107,"source":28,"type":29},[],96656456,[103,104,105,106],"曲轴箱与油底壳","气缸与油底壳","气缸与曲轴箱","气缸与扫气箱","十字头式柴油机采用中隔板将_________隔开"]