The following statements about flight control self-test are correct.
A.The first set of self-test requires hydraulic actuation and takes 90 seconds. The self-test starts as soon as the flaps are retracted. B.Flight maneuvering self-test in 2 groups C.Hydraulic shutdown and two parts start and shutdown, PMG power shutdown, start the second group of self-test, which takes 90 seconds, during which no flaps or reduction plates can be moved. D.All of the above are correct.正确答案A
