[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fkJZGDPV-m76svACo7XSCZyonM4keFbIeTOI4ddoNdng":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2024-04-15 16:23:39",138462985,[8,9,10,11],"gas turbine","diesel engine","steam engine","gasoline engine",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},31,"d3091ccddf441f3e64008f890b0c8a6b","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F1475cbd23f0fb197e8d38070b8c085b8.jpg","轮机英语","work_34271214","1-2原理","Propulsion of the vast majority of contemporary merchant ships (especially containerships and VLCCs) utilizes____ as prime mover",[21,32,41,50,59,62,71,80,89,98],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],138462981,[25,26,27,28],"100rpm","200rpm","300rpm","500rpm","The rotating range of the low speed diesel engine is usually lower than____","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":30,"type":31},[],138462982,[36,37,38,39],"both of them are ignited by compressed air","both of them are the forms of external combustion engines","both of them have spark plugs","the power is developed by the piston in the cylinder","The diesel engine is similar to the gasoline engine in that ______",{"answer":42,"createTime":5,"id":43,"options":44,"question":49,"source":30,"type":31},[],138462983,[45,46,47,48],"they operate between 150 and 450 rpm","they are connected to the propeller by gearing","their smaller size and weight","they can be connected directly to the propeller without gearing","The reason why more and more of the large merchant vessels are being powered by medium-speed diesel engines is ______",{"answer":51,"createTime":5,"id":52,"options":53,"question":58,"source":30,"type":31},[],138462984,[54,55,56,57],"steam rather than gas is used to turn a shaft","vapor rather than gas is used to turn a shaft","the former uses gas to turn a shaft","the latter uses gas to turn a shaft","Gas turbines differ from steam turbines in that ______",{"answer":60,"createTime":5,"id":6,"options":61,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":63,"createTime":5,"id":64,"options":65,"question":70,"source":30,"type":31},[],138462986,[66,67,68,69],"a single, long-stroke, slow-speed, turbocharged, two-stroke diesel engine","a single, long-stroke, medium-speed, turbocharged, four-stroke diesel engine","two medium-speed, turbocharged, four-stroke diesel engines","a variable-speed AC generator","Typical marine propulsion plants include____ directly coupled to the vessel's single large-diameter, fixed-pitch propeller",{"answer":72,"createTime":5,"id":73,"options":74,"question":79,"source":30,"type":31},[],138462987,[75,76,77,78],"pressed\u002Fto","pressurized\u002Fwith","pushed\u002Fin","compressed\u002Fto","A charge of fresh air is drawn into the engine cylinder and then _____ by the moving piston_____ very high pressure",{"answer":81,"createTime":5,"id":82,"options":83,"question":88,"source":30,"type":31},[],138462988,[84,85,86,87],"cross-head","cylinder","connecting rod","spark plug","A diesel engine is similar to a gasoline engine except that the former has no _____",{"answer":90,"createTime":5,"id":91,"options":92,"question":97,"source":30,"type":31},[],138462989,[93,94,95,96],"none, both","no, both","none, between","no, between","A low speed engine requires___ reduction gearbox____ it and propeller",{"answer":99,"createTime":5,"id":100,"options":101,"question":106,"source":30,"type":31},[],138462990,[102,103,104,105],"electric","heat","mechanical","exhaust","As a heat engine, _____ energy is the source of power by which the diesel engine can be operated"]