11.平均潮差是指下列何者?
(A)MLWN~MHWN
(B) MLW~MHW
(C)MLWS~MHWS
(D)當日之LW~HW
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統計: A(4), B(18), C(2), D(1), E(0) #1224216
統計: A(4), B(18), C(2), D(1), E(0) #1224216