296.石綿採樣濾紙匣加裝延長管其長度為多少 mm?
(A)10
(B)25
(C)50
(D)100
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統計: A(29), B(50), C(111), D(23), E(0) #2633653
統計: A(29), B(50), C(111), D(23), E(0) #2633653