20. 錨機應能在超過額定拉力1.5倍的負荷下至少能持續工作多久？ (A) 2分鐘 (B) 12分鐘 (C) 15分鐘 (D) 30分鐘

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

20. 錨機應能在超過額定拉力1.5倍的負荷下至少能持續工作多久？
(A) 2分鐘
(B) 12分鐘
(C) 15分鐘
(D) 30分鐘

相關試題

相關試卷