問題詳情

20.「Obstruction, which has been swept by wire to the depth shown」- it will be marked in the chartas:
(A)  Obstn
(B)  Obstn
(C)  Obstn
(D)  Wk

參考答案

答案:C
難度:適中0.693548
統計:A(6),B(10),C(43),D(3),E(0)

內容推薦

內容推薦