[{"data":1,"prerenderedAt":61},["ShallowReactive",2],{"q-108180-arch_construction-15":3},{"question":4,"neighbors":26,"sameNumber":45,"prev":34,"next":37},{"id":5,"classKey":6,"session":7,"year":8,"subject":9,"number":10,"groupStem":11,"ownStem":12,"stem":12,"options":13,"answer":18,"answerKind":20,"answerS":11,"answerNote":11,"images":21,"explanation":22,"withheld":11,"deepChars":23,"freq":24,"indexable":25},"arch-108180-801-0103-015","architect","108180",108,"建築構造與施工",15,null,"某一小型辦公空間面積為 100 m2，室內淨高為 3 m。若換氣次數為 0.5 次\u002Fhr，空氣混合率 40%採用合板輕隔間（表面積 60 m2，甲醛實際逸散速率為 0.05 mg\u002Fm2．hr），則推算室內合板產生甲醛濃度值約為多少？",{"A":14,"B":15,"C":16,"D":17},"0.03 mg\u002Fm3","0.05 mg\u002Fm3","0.08 mg\u002Fm3","0.10 mg\u002Fm3",[19],"B","single",[],"本題考點：室內污染物穩態濃度的質量平衡估算——逸散量 ÷（換氣量 × 空氣混合率）＝ 室內濃度。\n【正解理由】在穩定狀態下，合板每小時逸散進室內的甲醛量，等於換氣每小時帶走的甲醛量。逸散量是逸散速率乘以合板表面積；換氣量是換氣次數乘以室容積；但進入室內的新鮮空氣並非全部都與室內空氣均勻混合，實際能稀釋污染物的有效換氣量要再乘上空氣混合率。因此 C = (E × A) \u002F (n × V × k)。代入室容積 300 m³、換氣量 150 m³\u002Fhr、有效換氣量 60 m³\u002Fhr、逸散量 3 mg\u002Fhr，得濃度 0.05 mg\u002Fm³，與選項 (B) 相符，故選 B。\n【逐項排除】\n(A) 0.03 mg\u002Fm³：低於穩態質量平衡的結果；以逸散量除以有效換氣量，濃度應為 0.05 mg\u002Fm³。\n(B) 0.05 mg\u002Fm³：逸散量 3 mg\u002Fhr 除以有效換氣量 60 m³\u002Fhr，得 0.05 mg\u002Fm³，正確。\n(C) 0.08 mg\u002Fm³：高於計算結果，與題目給定的逸散速率、表面積、換氣次數與混合率代入後的值不符；正確應為 0.05 mg\u002Fm³。\n(D) 0.10 mg\u002Fm³：為正確值的兩倍，同樣與題目條件代入後的結果不符；正確應為 0.05 mg\u002Fm³。\n【演算步驟】\n室容積 V = 樓地板面積 × 淨高 = 100 m² × 3 m = 300 m³。\n換氣量 Q = n × V = 0.5 次\u002Fhr × 300 m³ = 150 m³\u002Fhr。\n有效換氣量 Q' = Q × 混合率 = 150 m³\u002Fhr × 0.4 = 60 m³\u002Fhr。\n甲醛逸散量 M = 逸散速率 × 表面積 = 0.05 mg\u002F(m²·hr) × 60 m² = 3 mg\u002Fhr。\n室內濃度 C = M \u002F Q' = 3 mg\u002Fhr ÷ 60 m³\u002Fhr = 0.05 mg\u002Fm³。\n【記憶點】污染物濃度＝產生量 ÷ 有效換氣量；有效換氣量要乘空氣混合率，混合率越低濃度越高。",591,1,true,[27,30,33,36,39,42],{"number":28,"session":7,"stem":29},12,"依據 CNS7477（鋁合金製門）進行鋁門的推門扇之開啟力試驗時，先依標準方法將門的…",{"number":31,"session":7,"stem":32},13,"下列何項不是在臺灣設計薄膜構造建築物之優點？",{"number":34,"session":7,"stem":35},14,"一般結構用木材需經過乾燥處理，其含水率會控制在：",{"number":37,"session":7,"stem":38},16,"因工期需求，必須提早拆除模板之 RC 工程最合理及適當的波特蘭水泥為下列何種？",{"number":40,"session":7,"stem":41},17,"有關耐震構造，下列敘述何者錯誤？",{"number":43,"session":7,"stem":44},18,"下圖之施工順序屬於何種樁基腳的作法？ ① ② ③",[46,49,52,55,58],{"number":10,"session":47,"stem":48},"114180","下列有關再生綠建材產品之 CO2 減量效果何者最佳？",{"number":10,"session":50,"stem":51},"113190","有關鋼結構之製作、安裝與品管，下列敘述何者錯誤？",{"number":10,"session":53,"stem":54},"112190","依據建築物無障礙設施設計規範，無障礙坡道每高差達多少公分時，應設置中間平台？",{"number":10,"session":56,"stem":57},"111180","有關木材的敘述，下列何者正確？",{"number":10,"session":59,"stem":60},"110180","依據建築技術規則，建築物應使用綠建材，建築物室內裝修材料、樓地板面材料及窗，其綠建材…",1791863209602]