6. Tide currents of decreased speed occurring semimonthly as the result of the moon being in
quadrature, it is:
(A) Monthly currents
(B) Cross tide currents
(C) Spring tide currents
(D) Neap tide currents
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統計: A(21), B(12), C(17), D(76), E(0) #1900596
統計: A(21), B(12), C(17), D(76), E(0) #1900596