实验室内使用乙炔气时,说法正确的是()
更新时间:2024-11-24 06:02:47 A、室内不可有明火,不可有产生电火花的电器A
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使用人工呼吸机时,若患儿吸氧浓度为100%,其持续时间应为()
Notuntilrecently_____thatThompsonhadbentellingthetruthallalong.
He‘sworkinghard_____.
重写句子:Alanpassedthetest.Alanhadstudiedhard.Alanhadunderstoodthematerial.(complexsentence)
Thebookfairhasreceivedapositive________fromreaders.