鍋爐使用單位在鍋爐檢修時應按照 DL/T561《火力發電廠水汽化學監督導則》對省煤器、鍋筒、水冷壁、過熱器、再熱器等部件的腐蝕、結垢、積鹽等情況進行檢查和評價。
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TheeffectofDarwinistideaof“survivalofthefittest”wasshatteringin()’sfictionalworldofjungle,where“killortobekilled”wasthelaw.
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Countrylifeisbetterthancitylife________itoffersfreshairandnoiselessenvironment
