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如图,在斜坡的顶部有一铁塔AB,B是CD的中点,CD是水平的,在阳光的照射下,塔...
如图,在斜坡的顶部有一铁塔AB,B是CD的中点,CD是水平的,在阳光的照射下,塔影DE留在坡面上.已知铁塔底座宽CD=12 m,塔影长DE=18 m,小明和小华的身高都是1.6m,同一时刻,小明站在点E处,影子在坡面上,小华站在平地上,影子也在平地上,两人的影长分别为2m和1m,那么塔高AB为( )
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A.24m
B.22m
C.20m
D.18m
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