After changing a fuel filter on a diesel engine, why does the fuel system usually need to be "bled" before the engine will run properly?

A. Bleeding is a cosmetic step and has no real effect on engine starting

B. Air gets introduced into the fuel lines during a filter change, and diesel engines can't tolerate air in the fuel system the way petrol engines can — bleeding purges that trapped air out through the system's bleed points so fuel, not air, reaches the injectors

C. Bleeding is only necessary on engines older than 10 years

D. Bleeding refers to draining the engine oil, not the fuel system

A. Nothing — a test lift can proceed immediately after repairs

B. Testing should wait until cargo operations begin

C. The area within the grab's swing radius should be cleared of personnel before the lift

D. Only the crane operator needs to be aware the lift is happening

A. Who must remain clear of the exclusion zone while the lift takes place

B. The lunch schedule for the deck team

C. Only the weather forecast for the next watch

D. The cargo manifest for the next port