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These models are prone to cracks, corrosion, and have on as a result of getting old and severe operational environments. Greater than 80% of apparatus failures stem from tube problems in warmth exchangers, posing sizeable basic safety pitfalls.?�後?�個是跟首?�館?�點類似,但比較容易?�解?�關?�,?�到?�個燈�?�