大连理工大学21春ACAD船舶工程应用在线作业二满分答案1. 要维持人的生命空气中含氧量不少于( )。A.11%B.16%C.21%要维持人的生命空气中含氧量不少于( )。A.11%B.16%C.21%正确答案：B2. Advance freight together with other charges _ due on shipmentA.isB.areC.hasD.haveAdvance freight together with other charges _ due on shipmentA.isB.areC.hasD.have正确答案：A3. ACAD中“点”菜单中有哪些项?( )A.单点B.多点C.定数等分D.定距等分参考答案：ABCD4. “湿冻伤”现象是由于艇筏上_。A.湿冷和不活动B.潮湿C.天冷受寒“湿冻伤”现象是由于艇筏上_。A.湿冷和不活动B.潮湿C.天冷受寒正确答案：A5. 每具救生筏的正常属具应有适于发莫尔斯信号的防水手电筒1只，连同备用电池1副及备用灯泡1只，分装每具救生筏的正常属具应有适于发莫尔斯信号的防水手电筒1只，连同备用电池1副及备用灯泡1只，分装在不同的防水容器内。此题为判断题(对，错)。正确答案：6. 在沿海国管辖区域内使用消油剂前，必须事先向当局申请，说明其( )，经批准后方可使用。A.牌号、用量B.在沿海国管辖区域内使用消油剂前，必须事先向当局申请，说明其( )，经批准后方可使用。A.牌号、用量B.使用地点C.牌号、用量、使用地点正确答案：C7. 船舶货舱通风不良会导致发热并蓄热的货物本身自燃。船舶货舱通风不良会导致发热并蓄热的货物本身自燃。此题为判断题(对，错)。正确答案：8. 电动起重机常用的有( )和可控硅控制系统两种。A.发电机系统B.电动机系统C.发电机-电动机系统D.以上皆不是参考答案：C9. Auto CAD中绘图的方式有哪几种?( )A.通过菜单命令绘图B.通过工具按钮绘图C.通过命令形式绘图参考答案：ABC10. AutoCAD软件中设置系统环境时，“选项”对话框共有几项?( )A.8B.9C.10D.11参考答案：B11. A fire has broken out on the stern of your vessel. You should maneuver your vessel so theA fire has broken out on the stern of your vessel. You should maneuver your vessel so the wind _.A.comes over the bowB.blows the fire back toward the vesselC.comes over the sternD.comes over either beam正确答案：A12. 在AutoCAD中，断开某对象时，采用下列中的哪一命令?( )A.trim(tr)B.extend(ex)C.break(br)D.chamfer(cha)参考答案：C13. 为了便于防护，应尽量将危险货物装于甲板。为了便于防护，应尽量将危险货物装于甲板。此题为判断题(对，错)。正确答案：14. 寒冷季节时，救生筏上的人员应使用手皮风箱给双层的筏底间充气，以减少筏内热量散失。寒冷季节时，救生筏上的人员应使用手皮风箱给双层的筏底间充气，以减少筏内热量散失。此题为判断题(对，错)。正确答案：15. 冬季常位于西伯利亚及蒙古一带的气压系统为： A冷低压 B冷高压 C暖高压 D热低压冬季常位于西伯利亚及蒙古一带的气压系统为：A冷低压B冷高压C暖高压D热低压B16. The external flotation bladder of an immersion suit should be inflated _.A.only afterThe external flotation bladder of an immersion suit should be inflated _.A.only after two hours in the waterB.only after four hours in the waterC.before entry into the waterD.upon entry into the water正确答案：D17. You are on a multiple-product chemical tanker and will carry cargoes of isophorone，ethylenYou are on a multiple-product chemical tanker and will carry cargoes of isophorone，ethylenediamine，and creosote. Which of the following is TRUE?A.All of these cargoes are compatibleB.Isophorone is incompatible with ethylenediamine but may be stowed adjacent to creosoteC.All of these cargoes are incompatibleD.Ethylenediamine is compatible with isophorone but both are incompatible with creosote正确答案：A18. The safety of the port should _ in respect of a vessel properly manned and equipped，aThe safety of the port should _ in respect of a vessel properly manned and equipped，and navigated and handled without negligence and in accordance with good seamanshipA.be watchedB.be seenC.be viewedD.be inspected正确答案：C19. Which of the following marine insurance policies is normally purchased by the cargo owner？Which of the following marine insurance policies is normally purchased by the cargo owner？ _.A.HullB.CargoC.Protection and IndemnityD.Pollution正确答案：B20. 紧急逃生呼吸器应存放在便于取用之处，( )检查瓶头阀的压力示值。A.每周B.每月C.每季紧急逃生呼吸器应存放在便于取用之处，( )检查瓶头阀的压力示值。A.每周B.每月C.每季正确答案：B21. 多孔闭式喷油器分解或组装多孔闭式喷油器分解或组装正确答案：1、闭式喷油器分解 1)将喷油器外部擦洗干净,喷油嘴头如果有积碳用铜刷清除。 2)正夹喷油器于台钳上,用扳手拆下油管接头,注意接头内的缝隙式滤芯不要掉落。 3)拧下尾部护罩,拧松锁紧螺母1-2圈,再将调压螺钉拧出。 4)从喷油器内取出弹簧上座、弹簧、顶杆。 5)倒夹喷油器使喷油嘴向上,拧下锁紧螺帽。 6)小心地取下针阀偶件和定位销。 7)将拆下的所有零件放在干净的油盆中。针阀和针阀体是精密偶件,拆下后应成对存放,不要搞错,并注意保护精密的加工表面。 2、多孔闭式喷油器的组装 1)喷油器零件在干净的轻柴油里漂洗干净,并经过检查合格后,就可装复。 2)将喷油器本体倒夹在台钳上,装上喷油嘴偶件。注意针阀体和喷油器体的端面销孔要对准入座，拧紧喷油嘴紧帽。 3)正夹喷油器于台钳上,依次装上顶杆、调压弹簧、弹簧座,拧入调压螺钉至不很紧的位置,放入铜垫片,旋入锁紧螺母,待喷射压力调整后在锁紧螺母和护罩。 4)拧紧带缝隙式滤芯的油管接头。22. The danger，the sacrifice or expenditure to which is the subject of general average，must beThe danger，the sacrifice or expenditure to which is the subject of general average，must be in fact _.A.a real oneB.an imagined oneC.a reasonable fearD.a rational one正确答案：A23. The load line certificate is issued by _.A.CCSB.the National Cargo BureauC.MSAD.PRC CThe load line certificate is issued by _.A.CCSB.the National Cargo BureauC.MSAD.PRC Customs正确答案：A24. AutoCAD中除了可使用arc命令绘制弧线外，还可以使用多段线pline命令绘制弧线。( )A.正确B.错误参考答案：A25. 锚机的过载拉力不应小于：A.额定拉力的1.5倍B.额定拉力的1.25倍C.额定拉力的1.1倍D.额定拉力的2倍锚机的过载拉力不应小于：A.额定拉力的1.5倍B.额定拉力的1.25倍C.额定拉力的1.1倍D.额定拉力的2倍正确答案：A26. A natural fiber rope can be ruined by dampness because it may _.A.rotB.shrinkC.stretcA natural fiber rope can be ruined by dampness because it may _.A.rotB.shrinkC.stretchD.unlay正确答案：A27. AutoCAD软件中创建单行文字采用何命令?( )A.dtextB.textC.mtextD.以上均不正确参考答案：A28. 我国海域是太平洋的多雾区之一，主要集中在沿海水域，北起渤海南至北部湾，大致呈带状分布。雾区的范围