74. 有關輸電線路，下列敘述哪些正確？(A)電暈可迅速衰減線路遭受雷擊所引起之高電壓進行波(Tra veling Wave)(B)提高電線架設高度，可減少輸電線路對大地之電容(C)為減低電暈，輸電線路可採複導體架設(D)輸電線路之上方，架設有架空地線，以防護雷擊。

74. 有關輸電線路，下列敘述哪些正確？
(A)電暈可迅速衰減線路遭受雷擊所引起之高電壓進行波(Tra veling Wave)
(B)提高電線架設高度，可減少輸電線路對大地之電容
(C)為減低電暈，輸電線路可採複導體架設
(D)輸電線路之上方，架設有架空地線，以防護雷擊。

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統計： A(44), B(40), C(43), D(42), E(0) #3252536

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B1 · 2025/10/21

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題目解析這道題目主要探討輸電線路的特...

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4. A strip of copper is placed in a 1 M solution of copper nitrate, and a strip of silver is placed in a 1 M solution of silver nitrate. The two metal strips are connected to a voltmeter by wires, and a salt bridge connects the solutions. The following standard reduction potentials apply: Ag+(aq) + e- → Ag(s) E° = +0.80 V Cu2+(aq) + 2e- → Cu(s) E° = +0.34 V When the voltmeter is removed and the two electrodes are connected by a wire, which of the following does .not. take place? (A) Negative ions pass through the salt bridge from the silver half-cell to the copper half-cell. (B) Some positive copper ions pass through the salt bridge from the copper half-cell to the silver half-cell. (C) The silver electrode increases in mass as the cell operates. (D) Electrons flow in the external circuit from the copper electrode to the silver electrode. (E) There is a net general movement of silver ions through the salt bridge to the copper half-cell.

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