The two fans are not interchangeable with each other. The right fan gives more air flow than the left. Additional air flow is necessary to make sure sufficient air is available to the forward cargo compartment. ( )
A.The right fan provides more air, so it can not be replaced with the left one. B.The left fan provides more air, so it can not be replaced with the right one. C.The two fans can be changed each other.正确答案A
