Freezing Point Depressant (FPD) fluids used for deicing
A.provide ice protection during flight.
B.are intended to provide ice protection on the ground only.
C.on the ground, cause no performance degradation during takeoff.
正确答案是B
Freezing Point Depressant (FPD) fluids used for deicing
A.provide ice protection during flight.
B.are intended to provide ice protection on the ground only.
C.on the ground, cause no performance degradation during takeoff.
正确答案是B