—SF133, approaching holding point 29L, request cross runway 29L. —SF133, _______, hold short of runway 29L.
A.no
B.negative
C.cleared
D.approved
正确答案是B
—SF133, approaching holding point 29L, request cross runway 29L. —SF133, _______, hold short of runway 29L.
A.no
B.negative
C.cleared
D.approved
正确答案是B