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[单选题]
下滑信标台的场地保护区分为A,B和C区。B区内航向信标台机房总高度和()以外的障碍物高度不应超过跑道端净空限制要求。
A.400m
B.500m
C.600m
D.700m
查看答案
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A.400m
B.500m
C.600m
D.700m
A.400m
B.500m
C.600m
D.700m
A.328.6MHz~335.4MHz
B.318.6MHz~335.4MHz
C.308.6MHz~335.4MHz
D.328.6MHz~355.4MHz
A.308.6MHz-335.4MHz
B.318.6MHz-335.4MHz
C.328.6MHz-345.4MHz
D.328.6MHz-335.4MHz