14. Which element is not included in use for daily maintenance works on the ship? (A) Washer (B) Screw (C) Trap (D) Hose clamp

10. The followings are procedures of start the engine. Which step is incorrect? (A) Open the starting air reservoir valve and safety valve. (B) Hold the START switch pressing for 2 to 3 seconds, and make sure of ignition. Only then release the switch. (C) Close the starting air reservoir valve. (D) Keep the control air valve opened during a run.