15.則現地土壤之相對夯實度為何?
(A) 93.6%
(B) 95%
(C) 97.4%
(D) 100 %
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統計: A(0), B(1), C(0), D(0), E(0) #3821620
統計: A(0), B(1), C(0), D(0), E(0) #3821620