根据以下材料,回答题Better Solar Energy Systems: More Heat, More Light

根据以下材料,回答题Better Solar Energy Systems: More Heat, More LightSolar photovoltaic

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The trends method works well when

The trends method works well whenA.weather features are constant for a long peri

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The persistence method fails to work well when

The persistence method fails to work well whenA.it is rainy. B.it is sunny. C.we

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The word "that" in Paragraph 3 refers to__________.

The word "that" in Paragraph 3 refers to__________.A.making preparations. B.avoi

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