50. Which is true about Auroras?
(A) They can only appear as arcs or swirls.
(B) The most spectacular ones are most often viewed in Japan.
(C) They appear to be in motion once in a while.
(D) The collision of some particles causes quantum leaps.
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統計: A(12), B(31), C(98), D(350), E(0) #1806268
統計: A(12), B(31), C(98), D(350), E(0) #1806268
詳解 (共 5 筆)
#7308633
50. 關於極光,下列哪一項是正確的?
(A) 極光只能以弧形或漩渦狀出現。
(B) 最壯觀的極光通常在日本觀測到。
(C) 極光偶爾看起來會運動。
(D) 某些粒子的碰撞會導致量子躍遷。
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