Windshield wipers of are provided to maintain a clear area on the cockpit No.1 windows. Which of the following statements is correct?
A.A.Each wiper is operated by a separate system
B.B.Windshield wipers are hydraulically operated & electrically controlled
C.C.Windshield wipers may be operated on a dry windshield
D.D.None of the above
正确答案是A