21. Within how many hours the data of VDR (Voyage Data Recorder) will be overwritten as required by IMO? (A) 6 (B) 10 (C) 12 (D) 24

21. Within how many hours the data of VDR (Voyage Data Recorder) will be overwritten as required by IMO?
(A) 6
(B) 10
(C) 12
(D) 24

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統計： A(3), B(4), C(41), D(21), E(0) #3414894

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B1 · 2025/09/22

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6. What light signal shall be exhibited for a vessel engaged on pilotage duty while underway? (A) At or near the masthead, two all-round lights in a vertical line, the upper being red and the lower white. Sidelights and a sternlight. (B) At or near the masthead, two all-round lights in a vertical line, the upper being white and the lower red. Sidelights and a sternlight. (C) At or near the masthead, two all-round lights in a vertical line, the upper being green and the lower red. Sidelights and a sternlight. (D) At or near the masthead, two all-round lights in a vertical line, the upper being red and the lower green. Sidelights and a sternlight.

21. Within how many hours the data of VDR (Voyage Data Recorder) will be overwritten as required by IMO?
(A) 6
(B) 10
(C) 12
(D) 24

詳解 (共 1 筆)

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