[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fA-H3MIYs37M7XViTcoZAeYTLDgQNQVprTF4xxUVVLIE":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":10,"question":17,"related":18,"source":24,"type":25},[],"2024-03-06 15:01:50",133152057,[8,9],"正确","错误",{"count":11,"courseId":12,"courseImg":13,"courseName":14,"workId":15,"workName":16},22,"764fb0aa0e1ba40489fcd62698bff4b2","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F1013c9efa50d6547afda3b0a59bd495e.jpg","汽车专业英语","work_29419745","","In the first stroke, both intake and exhaust valves are opened",[19,26,29,34,39,44,49,54,59,64],{"answer":20,"createTime":5,"id":21,"options":22,"question":23,"source":24,"type":25},[],133152056,[8,9],"Generally, one working cycle contains four strokes","v1",3,{"answer":27,"createTime":5,"id":6,"options":28,"question":17,"source":24,"type":25},[],[8,9],{"answer":30,"createTime":5,"id":31,"options":32,"question":33,"source":24,"type":25},[],133152058,[8,9],"In the exhaust stroke, the piston moves downwards to push the burned gases out of the cylinder",{"answer":35,"createTime":5,"id":36,"options":37,"question":38,"source":24,"type":25},[],133152059,[8,9],"A spark plug is used to ignite the fuel-air mixture in the gasoline engine",{"answer":40,"createTime":5,"id":41,"options":42,"question":43,"source":24,"type":25},[],133152060,[8,9],"A cylinder head is a casting only made from iron",{"answer":45,"createTime":5,"id":46,"options":47,"question":48,"source":24,"type":25},[],133152062,[8,9],"In general, the valves are held in the cylinder head instead of the cylinder block",{"answer":50,"createTime":5,"id":51,"options":52,"question":53,"source":24,"type":25},[],133152063,[8,9],"In the first stroke, the exhaust valves are opened, letting the fuel-air mixture into the combustion chamber",{"answer":55,"createTime":5,"id":56,"options":57,"question":58,"source":24,"type":25},[],133152064,[8,9],"The camshaft is used to open and close the valves with the motion of the pistons",{"answer":60,"createTime":5,"id":61,"options":62,"question":63,"source":24,"type":25},[],133152065,[8,9],"DOHC means that there are two camshafts in the cylinder block",{"answer":65,"createTime":5,"id":66,"options":67,"question":68,"source":24,"type":25},[],133152066,[8,9],"Cylinder block or engine block is actually a complex machined casting unit"]