16. 下列何項裝置可利用鍋爐廢熱加熱進氣，以提高鍋爐內燃燒溫度，並促進燃燒效果？ (A) 節熱器 (B) 空氣預熱器 (C) 吹灰器 (D) 過熱器

8. One kind of tools which are in common use for daily maintenance works on the ship is a simple tool designed to insert and tighten, or to loosen and remove, screws. The tool comprises an approximately cylindrical handle to be held by the worker, and an axial shaft fixed to the handle, the tip of which is shaped to fit a particular type of screw. The handle and shaft allow the tool to apply torque. What tool is above description? (A) Hammer (B) Screwdriver (C) Pliers (D) Drill

16. 下列何項裝置可利用鍋爐廢熱加熱進氣，以提高鍋爐內燃燒溫度，並促進燃燒效果？
(A) 節熱器
(B) 空氣預熱器
(C) 吹灰器
(D) 過熱器

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