11. 下列何者為極高頻(UHF)之頻寬範圍？(A) 3-30MHZ(B) 30-300 MHZ(C) 300-3000 MHZ(D) 3000-30000 MHZ

11. 下列何者為極高頻(UHF)之頻寬範圍？
(A) 3-30MHZ
(B) 30-300 MHZ
(C) 300-3000 MHZ
(D) 3000-30000 MHZ

答案：登入後查看
統計： A(19), B(31), C(240), D(111), E(0) #3351403

詳解 (共 2 筆)

阿里茶

B2 · 2024/12/29

#6279402

加賴叫過去

B1 · 2024/12/01

#6262064

(A) 3-30 MHz...

(共 232 字，隱藏中）

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14. A: Keelung VTS. This is MV Ocean Uni. I can not control ship’s speed and the ship is not under command. B: Ocen Uni. This is Keelung VTS. You should leave traffic lane by keeping to starboard side as close as practicable, Over. Question: What’s wrong with the MV Ocean Uni?(A) It has got an engine failure.(B) It has left the traffic lane by mistake.(C) It has collided with other vessel.(D) It has come across a head-on situation.

11. 下列何者為極高頻(UHF)之頻寬範圍？
(A) 3-30MHZ
(B) 30-300 MHZ
(C) 300-3000 MHZ
(D) 3000-30000 MHZ

詳解 (共 2 筆)

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