Airport Engineering
The threshold markings are

Placed symmetrically on either side of the runway centre line
All listed here
4 m wide
1 m clear space between adjacent

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Airport Engineering
In instrument landing system

L.O.M. and Localizer are installed on one side and L.M.M. on the other side
Localizer and L.M.M. are installed on one side and L.O.M. on the other side
L.O.M. and L.M.M. are installed on one side and Localizer antenna on the other side
None of these

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