
大连理工大学21秋《ACAD船舶工程应用》在线作业二答案参考48.docx
15页大连理工大学21秋《ACAD船舶工程应用》作业二答案参考1. 柴油机曲轴拐挡差的测量与轴线状态分析柴油机曲轴拐挡差的测量与轴线状态分析正确答案:1、查拐挡表的灵敏度,检查无误后,根据臂距的大小选择并调整拐挡表测量杆的长度,使之比臂距大1-2mm 2、盘车至195°位置,清洁两曲柄臂上的冲孔,将拐挡表装入两曲柄臂的冲孔中如没有冲孔,应在距曲柄销轴线为(S+D)/2处的曲柄臂两边打上冲孔,安装正确后,将表指针调“0”位 3、正车转动曲轴,对装有活塞连杆组件的曲轴,分别转至左平、上止点、右平和下止点前15°左右,即曲柄销自195°位置开始,经270°,0°,90°及165°,共五个位置,记录各位置拐挡表的读数 4、拐挡表的记录方法参见“动力设备拆装”指导书 5、拐挡表的计算与轴线状态分析 上下拐挡差△上下为:△上下=L上-L下,左右拐挡差△左右为:△左右=L左-L右拐挡差△上下为正(+),曲轴轴线呈下弧线弯曲,该曲柄两端的主轴承比其相邻的主轴承低;拐挡差△上下为负(-),曲轴轴线呈上弧线弯曲,该曲柄两端的主轴承比其相邻的主轴承高;同样,拐挡差△左右为正(+),轴线在水平面呈右弧线弯,反之,拐挡差△左右为负(-),轴线在水平面呈左弧线弯。
2. 根据《船舶与海上设施法定检验规则》,在某一装载状态下当船舶的实际重心高度大于许用重心高度时,则根据《船舶与海上设施法定检验规则》,在某一装载状态下当船舶的实际重心高度大于许用重心高度时,则____不满足要求①初稳性②大倾角稳性③动稳性A.①B.②C.③D.①、②、③都有可能正确答案:D3. 调用区域填充命令可以选择[绘图]-[曲面]下拉菜单中的三维填充命令 )A.正确B.错误参考答案:B4. Please collect all the shore-passes and hand them back ______ me.A.forB.withC.toD.ofPlease collect all the shore-passes and hand them back ______ me.A.forB.withC.toD.of正确答案:C5. 当海上风大浪高导致无法进行_____,使海面平稳,便于顺利进行救助A.润滑油B.镇浪油C.动力油当海上风大浪高导致无法进行_____,使海面平稳,便于顺利进行救助A.润滑油B.镇浪油C.动力油正确答案:B6. 下列设备中,漏泄量最少的是:A.齿轮泵B.螺杆泵C.离心泵D.往复泵下列设备中,漏泄量最少的是:A.齿轮泵B.螺杆泵C.离心泵D.往复泵正确答案:B7. A list man would expect to see any of the following light signals EXCEPT ______.A.two redA list man would expect to see any of the following light signals EXCEPT ______.A.two red lightsB.one green lightC.one white lightD.one amber light正确答案:D8. 在命令提示过程中若连续选择“放弃”选项可连续取消当前命令所执行的操作。
)A.错误B.正确参考答案:B9. “选项”对话框中有12个选项卡 )A.错误B.正确参考答案:A10. 以下哪个总吨的货船可以不配备自动识别系统?A.300总吨B.500总吨C.1000总吨D.3000总吨以下哪个总吨的货船可以不配备自动识别系统?A.300总吨B.500总吨C.1000总吨D.3000总吨正确答案:A11. To determine which grades of cargo a tank vessel is permitted to carry you should ______.ATo determine which grades of cargo a tank vessel is permitted to carry you should ______.A.refer to the vessel's Certificate of InspectionB.examine the cargo tanks and fittingsC.ask the terminal supervisor or his representativeD.check the loading order正确答案:A12. 若人员在海上求生过程中受伤或患病,伤者或患病人员往往无法得到及时救治,甚至部分人员还会因此丧若人员在海上求生过程中受伤或患病,伤者或患病人员往往无法得到及时救治,甚至部分人员还会因此丧失生命,这会严重动摇人们的求生意志。
此题为判断题(对,错)正确答案:√13. 辐射逆温常常出现在: A.晴朗无风的白天 B.阴天无风的白天 C.晴朗无风的夜间 D.阴天大风的夜间辐射逆温常常出现在: A.晴朗无风的白天 B.阴天无风的白天 C.晴朗无风的夜间 D.阴天大风的夜间C14. 在AutoCAD软件中,定义块之后,要定义块的属性 )A.正确B.错误参考答案:B15. 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:√16. AutoCAD软件中,文字字体及字号均由文字样式控制 )A.正确B.错误参考答案:A17. Functions aboard a tanker or tank barge such as connecting,disconnecting,and topping off mFunctions aboard a tanker or tank barge such as connecting,disconnecting,and topping off must be supervised by ______.A.any certificated tankermanB.the Master of the vesselC.the officer of the watchD.the person designated as person in charge正确答案:D18. 在南半球船舶由气旋前部进入暖区,观测到风向变化为: A.E~NE转为N~NW B.E~SE转为S~SW C.S~SW转为N~NW D.在南半球船舶由气旋前部进入暖区,观测到风向变化为: A.E~NE转为N~NW B.E~SE转为S~SW C.S~SW转为N~NW D.N~NW转为S~SWA19. 船舶的上层建筑是指在干舷甲板上从舷边跨到舷边或其侧壁板离舷侧板向内不大于船宽B的( )的甲板建船舶的上层建筑是指在干舷甲板上从舷边跨到舷边或其侧壁板离舷侧板向内不大于船宽B的( )的甲板建筑物。
A.1%B.2%C.4%D.5%正确答案:C20. 在AutoCAD中,拉长某对象时,采用下列中的哪一命令?( )A.stretchB.scaleC.lengthenD.extend参考答案:C21. 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:B22. AutoCAD中,根据当前屏幕显示范围,最大限度地将图形全部显示在屏幕中称为“动态缩放” )A.错误B.正确参考答案:A23. A copy of the Articles of Agreement,less the names,is required to be posted.This documentA copy of the Articles of Agreement,less the names,is required to be posted.This document is called the______.A.Shipping ArticlesB.Fo'c'sle CardC.Voyage AgreementD.Articles Copy正确答案:B24. 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:A25. 船舶常用的起货设备主要有两类,即( )。
A.吊杆起货设备B.吊柱起货设备C.挖掘机D.起重机参考答案:AD26. The owner or Master of a towing vessel shall ensure that each person that directs and contThe owner or Master of a towing vessel shall ensure that each person that directs and controls the movement of the vessel can accomplish all of the following EXCEPT ______.A.evaluate the danger of each closing visual or radar contactB.adjust speed with due regard for the weather and visibilityC.reduce speed only where local speed limits are postedD.enter all required test and inspection results in the vessel's log or other record carried on board正确答案:C27. A psychrometer has two thermometers that provide dry bulb and wet bulb temperatures. By coA psychrometer has two thermometers that provide dry bulb and wet bulb temperatures. By comparing these two temperature readings with a set of tables you can determine the ______.A.atmospheric pressureB.wind speedC.relative humidity and dew pointD.wind chill factor正确答案:C28. An American Shipowner can 。












