海船船员答疑精华5篇.docx
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1、海船船员答疑精华5篇海船船员答疑精华5篇 第1篇润滑剂中的极性分子靠化学键力吸附在摩擦表面上形成的膜称为_。A.物理吸附膜B.化学吸附膜C.化学反应膜D.润滑油膜参考答案:B 艇筏上的求生者如发现海上漂流的海藻中有植物、树枝等,则表明陆地就在附近。()参考答案:正确 为确保撇缆迅速成功,防止撇缆头伤人或损坏船上设备,投掷前应()。A.注意对面人员的动态B.投掷时应打招呼喊一声“来了”以引起对方注意C.没有必要打招呼D.AB均对正确答案:D 材料:At 1800,the hydraulic steering system failed once againThe master realized
2、he would require shore assistance to rectify the problem,and diverted towards Portland using the thruster to steer byThe weather at this time was south-south-west force 5At about three hours later,the thruster drive unit failed due to a leaking fuel injector pipe on the power unitThis was replaced u
3、sing the spare carried on boardImmediately following the engine restart,an adjacent fuel line failed causing shut down of the unitWith no fuel line spares available,the thruster power unit could not be usedThe failure of this unit,and that of the main hydraulic steering system,left the vessel withou
4、t any steering capabilityAt 2155,with the weather deteriorating and no steering,the master contacted the Portland Coastguard and a“Pan pan”message was broadcastA tow to Portland Harbor was arranged and she arrived alongside at 0240 the following morningThe subsequent investigation found that the mai
5、n hydraulic steering system failure was due to a seized shuttle valve in the main hydraulic solenoid valve blockThe solenoid valve had been recently overhauledIt was thought that the“O”rings fitted to the shuttle valve were of either the wrong type or a defective oneThe valve had seized in such a po
6、sition that hydraulic pressure by-passed the system preventing use of the hand steering问题:The vessel was steered by thruster because _ failedA.the hydraulic steering systemB.the solenoid valveC.the thruster driving unitD.the hand steeringThe time that the thruster drive unit failed was _ hrsA.1800B.
7、2100C.2155D.0240When the hydraulic steering system failed,_A.the hand steering system could still be usedB.the auto steering system could still be usedC.both hand and auto steering system were out of useD.neither and steering system nor auto steering system was out of useThe real reason that caused
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