The first practical cooling system for use in industrywas inventedwas invented (invent) by Willis Carrier in New York,the USA.
【考點(diǎn)】一般過(guò)去時(shí)的被動(dòng)語(yǔ)態(tài).
【答案】was invented
【解答】
【點(diǎn)評(píng)】
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發(fā)布:2024/6/27 10:35:59組卷:11引用:2難度:0.7
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