22. During ____, the ship is secured to the pier with mooring lines while the main engines areused t
23. Whichdevice is used in a diesel engine to inject a metered quantity of lubricating oil into thec
37. Which section of the shafting system is used to secure the propeller?(A) Thrust shaft (B) Interm
38. What is the additive of lubricant oil to improve the cleanliness of surfaces?(A) Oxidation inhib
39. Which event in those seawater systems is often prevented by continuously injecting chemicalpoiso