CCA101identified10miles__theairfield（）
A. southwest of
B. to southwestern
C. the southwestern of
D. to southwest of
CCA101,reducespeedto230knotsdue（）
A. separation
B. sequencing
C. flow control
D. all of above
ACKNOWLEDGE”means（）
A. let me know that you have received this message
B. let me know that you have understood this message
C. let me know that you have received and understood this message
D. let me know whether you received this message
CSN3290,holdshortofRWY22,traffic（）
A. in sight
B. on base
C. is close
D. on final
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