[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fmUBCyX3Z46k-LLu4fxwNYnogiRFQTVcblavcGJpIp20":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2023-12-17 15:46:38",114809798,[8,9,10,11],"controls","increases","decreases","maintains",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},8,"387be972678c6b7c964b909f59deaab6","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb352afbc1ea29fbb6d8c348e7b56bb46.jpg","轮机英语","be0a3efcded94415ab88172877f3ba9a","阀门","A valve is a device that regulates, directs or ______ the flow of a fluid",[21,32,41,50,59,68,77,86],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],114809776,[25,26,27,28],"A gate valve","A globe valve","Any check valve","Any needle valve","Which of the valves listed should be used either in the fully opened or the fully closed position","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":30,"type":31},[],114809778,[36,37,38,39],"used in either the fully closed or fully opened position","installed with the stem down","used for steam service only","used to throttle or regulate the flow of liquid","A gate valve installed in a pipeline should be _____",{"answer":42,"createTime":5,"id":43,"options":44,"question":49,"source":30,"type":31},[],114809779,[45,46,47,48],"a test valve","an inspection valve","a stop valve","a non-return valve","A check valve is another name for _____",{"answer":51,"createTime":5,"id":52,"options":53,"question":58,"source":30,"type":31},[],114809781,[54,55,56,57],"gate valve","globe valve","check valve","plug cock","The valve best suited for throttling gas or liquid flow in a pipeline is the _________",{"answer":60,"createTime":5,"id":61,"options":62,"question":67,"source":30,"type":31},[],114809784,[63,64,65,66],"The globe valve may be suitable for partially open operation","The globe valve will give full bore flow with change of direction","The gate valve gives full bore flow without change of direction","The gate valve is suitable for full bore operation only","Unlike the globe valve, gate valves give full bore flow without change of direction, such a valve is not suitable to partially open operation. According to the above sentence, which of the following statements is NOT true",{"answer":69,"createTime":5,"id":70,"options":71,"question":76,"source":30,"type":31},[],114809790,[72,73,74,75],"The diameter of a disc is the same as the outer diameter of the pipe","We can infer that the valve is opened or closed by rotating the spindle","A butterfly valve comprises a disc and a ring body","The profile of the butterfly valve is a ring body","A butterfly valve consists basically of a disc pivoted across the bore of a ring body having the same radial dimensions as the pipe in which it is fitted. According to the above sentence, which of the following statements is NOT true",{"answer":78,"createTime":5,"id":79,"options":80,"question":85,"source":30,"type":31},[],114809794,[81,82,83,84],"Special tools are required for lapping or grinding","It is impossible to throttle flow with a butterfly valve","To close the valve, it is only necessary to turn the handle a quarter of a turn","The butterfly valve should never be used in a freshwater system","Which of the following statements concerning butterfly valves is correct",{"answer":87,"createTime":5,"id":6,"options":88,"question":19,"source":30,"type":31},[],[8,9,10,11]]