An on glide slope indication from a four-light PAPI is _______ ．
Afour white lights
Bfour red lights
Cfour green lights
Dtwo white and two red lights
相关试题
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An on glide slope indication from a four-light PAPI is _______ ．
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An on glide slope indication from a tri-color VASI is _______ light.
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An on glide slope indication from a two-bar VASI is _______ ．
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A below glide slope indication from a tri-color VASI is _______ light.
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An above glide slope indication from a two-bar VASI is _______ ．