Among the main propulsion units on board t
题型:单项选择题
问题:
Among the main propulsion units on board the ship with the same capacity, the lightest one is().
A.steam engine
B.steam turbine
C.gas turbine
D.diesel engine
Among the main propulsion units on board the ship with the same capacity, the lightest one is().
A.steam engine
B.steam turbine
C.gas turbine
D.diesel engine