申論 1試述離心式泵發生空蝕是如何形成?有何影響?如何減小離心式泵空蝕危害?(20 分)
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申論 2試述鍋爐內爐水所造成腐蝕與危害的主要原因為何?(20 分)
申論 3試述蒸餾式海水淡化裝置影響淡水產量降低的原因為何?(20 分)
申論 4試述冷凍系統中殼管式冷凝器的平常維護保養工作為何?(20 分)
申論 5請將下列英文譯成中文:(20 分)Water transducer failure alarm is activated if the transducer is measuring lessthan 0.05% water content in the outlet oil. Since it is not possible to measurea water content below this value in this purifier system, this limit is used toindicate a fault condition of the transducer. This failure could be looseconnections, faulty oscillator unit, etc. After repair of transducer, we have toreset the control program before it is possible to start the purifier.