15. 碟式淨油機是利用何種原理完成油水分離？ (A) 地心引力 (B) 離心力 (C) 表面張力 (D) 內聚力

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

15. 碟式淨油機是利用何種原理完成油水分離？
(A) 地心引力
(B) 離心力
(C) 表面張力
(D) 內聚力

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