右圖為某兩次測量得到的電離層隨高度變化情形，下列敘述何者正確?(A) X 為太陽活動極小期測得， Y 則為極大期測得(B) 若 X 為夏季測得，Y 則為冬季測得(C) 若 X 為高緯測得，Y

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10. 右圖為某兩次測量得到的電離層隨高度變化情形，下列敘述何者正確?
(A) X 為太陽活動極小期測得， Y 則為極大期測得
(B) 若 X 為夏季測得，Y 則為冬季測得
(C) 若 X 為高緯測得，Y 則為低緯測得
(D) 若 X 為白天測得，Y 則為晚上測得

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