4.表示「本輪有潛水夫在水中,請慢速遠離」時,應懸掛何種信號旗?
(A) A
(B)B
(C)H
(D)J
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統計: A(32), B(6), C(0), D(0), E(0) #1214630
統計: A(32), B(6), C(0), D(0), E(0) #1214630