词汇与结构The pilots should have in mind some ______ plans in case the route cannot be flown for some reason like unexpected weather conditions.
A. refined
B. replaced
C. alternative
D. alternate
查看答案
词汇与结构At times the pilot may be required to ______ a flight plan for an alternate destination and to carry adequate fuel for this.
A. send
B. file
C. write
D. publish
词汇与结构The more work a pilot can do on the ground ______ departure, the easier it will be in the air.
A. prior to
B. after
C. when
D. for
词汇与结构Mode S is designed to help avoid over-interrogation of the transponder and to allow ______ collision avoidance.
A. mechanical
B. alternative
C. technical
D. automatic
词汇与结构It is important for pilots to select adequate________ before flight for pilotage navigation.
A. waypoints
B. checkpoints
C. references
D. alternate airports