The fan of turbo-fan engine is not as large as a propeller, so the increase of speeds along the blades is less. ( )
A.The fan of turbo-fan engine is similar to a propeller, so the increase of speeds along the blades is less. B.The fan of turbo-fan engine is larger than a propeller, so the increase of speeds along the blades is less. C.The fan of turbo-fan engine is smaller than a propeller, so the increase of speeds along the blades is less.正确答案C
