右图所示是一把既能吹冷风,又能吹热风的电吹风的简化电路,图中

右图所示是一把既能吹冷风,又能吹热风的电吹风的简化电路,图中A是吹风机,B是电热丝。将插头插入插座,若只闭合开关Sl,电吹风吹出的是____风;若将开关Sl、S2都闭合,电吹风吹出的是____风。(填“热”或“冷”)

答案

冷 热解析:

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