第三次测试_显示答案.docx

第三次测试_显示答案.docx

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第三次测试 满分:100 分 姓名: 班级: 学号: 1. 单选题 ( 1.0 分 ) When distilling sea water the cooling water discharging from the distiller is fed back to evaporator as feed water ____. A. to decrease scale formation B. for better cooling effect C. for more economical purpose D. to raise vacuum 正确答案:C 2. 单选题 ( 1.0 分 ) Among the basic categories of equipment, which of the following is used to convert hydraulic energy into linear motion? A. A .hydraulic pumps B. hydraulic cylinders C. valves D. hydraulic motor 正确答案:B 3. 单选题 ( 1.0 分 ) What is the more advanced anchor handling equipment on large modern vessels? A. windlass B. split windlass C. cable lifter D. mooring drum 正确答案:B 4. 单选题 ( 1.0 分 ) When does the pump control lever moves back to the original position and the pumping action stops? A. When the control spindle is moved away from the central point. B. When the failures result in audible and visual alarms on the bridge. C. When the rudder stock has reached the desired angle. D. When the spindle more is moved from the central point. 正确答案:C 5. 单选题 ( 1.0 分 ) The ____ is a measure of the phase difference between voltage and current and is expected as the cosine of phase angle. A. power B. efficiency C. effective power D. power factor 正确答案:D 6. 单选题 ( 1.0 分 ) When you want to stop one generator after parallel operation, the first step is to . A. turn off the engine immediately B. remove the load from the off-going generator C. increase the frequency on the switchboard D. ensure the load is evenly shared 正确答案:B 7. 单选题 ( 1.0 分 ) Synchroscope and synchro indicating lights are located on of main switchboard. A. load panel B. emergency generator control panel C. ba

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