单项选择题

Most often （） is attached to the engine-propeller shaft for efficient electric power generation.

A.a variable-speed AC generator
B.a fixed-speed AC generator
C.an air blower
D.a DC generator

相关考题

In today’s practice, with cylinders of equal diameter o...

单项选择题In today’s practice, with cylinders of equal diameter of bore and equal revolutions, the two-cycle engine delivers a power about 80 percent （） than that of the four-stroke one.

A.greater
B.better
C.smaller
D.less

With（） the engine need not to be aligned with reduction...

单项选择题With（） the engine need not to be aligned with reduction gears or propeller shaft.

A.Diesel engine propulsion
B.Diesel electric propulsion
C.Steam engine propulsion
D.Gas turbine propulsion

Typical marine propulsion plants include（） directly cou...

单项选择题Typical marine propulsion plants include（） directly coupled to the vessel’s single large-diameter, fixed-pitch propeller.

A.a single, long-stroke, slow-speed, turbocharged, two-stroke diesel engine
B.a single, long-stroke, medium-speed, turbocharged, four-stroke diesel engine
C.two medium-speed, turbocharged, four-stroke diesel engines
D.a variable-speed AC generator

船舶电气与船舶安全

Most often （） is attached to the engine-propeller shaft for efficient electric power generation.