5. Certain watch keeping duties are necessary for the continuous operation of equipment or
plan such as the ________.
(A) purifying oil
(B) transferring oil
(C) supplying fuel from rank to engine
(D) heating heavy oil
40. Which is one of major components of a steam turbine power plant generally working at a
vacuum pressure in order to gain a greater efficiency?
(A) Condenser
(B) Steam drum baffles
(C) Steam blanket
(D) Vacuumed distillation plant