27. 「摩爾斯碼信號」中，「─ ─ ─ ─ ─ (劃、劃、劃、劃、劃、)」代表何信號？(A) 0(B) 5(C) 8(D) 10

27. 「摩爾斯碼信號」中，「─ ─ ─ ─ ─ (劃、劃、劃、劃、劃、)」代表何信號？
(A) 0
(B) 5
(C) 8
(D) 10

答案：登入後查看
統計： A(45), B(11), C(1), D(10), E(0) #3414900

詳解 (共 1 筆)

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B1 · 2025/09/22

#6769011

題目解析摩爾斯碼是一種用於電報和無線...

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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.

27. 「摩爾斯碼信號」中，「─ ─ ─ ─ ─ (劃、劃、劃、劃、劃、)」代表何信號？
(A) 0
(B) 5
(C) 8
(D) 10

詳解 (共 1 筆)

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