The turn and slip indicator is used by the pilot to complete turns at a required rate without slip or _______ .
A.turning
B.climbing
C.descending
D.skid
正确答案是D
The turn and slip indicator is used by the pilot to complete turns at a required rate without slip or _______ .
A.turning
B.climbing
C.descending
D.skid
正确答案是D