26. 船舶軸系各線軸，其工作軸頸因潤滑不良所導致的初期損壞情形是那一種？ (A) 磨損 (B) 腐蝕 (C) 撞彎 (D) 折裂

3. The layout of drain systems can often be improved by the use of automatic pumps. Condensate can be drained by gravity more readily to local receivers and then pumped back to the engine room as required. What type of operated traps is above description? (A) Mechanical trap (B) Thermostatic trap (C) Thermodynamic trap (D) Vacuum trap