计算题:某加热炉辐射段热负荷为2280×103kJ/h,辐射管传热面积为960m2, 发布时间:2019-08-17 18:36 │ 来源:www.tikuol.com 题型:问答题 简答题 问题: 计算题:某加热炉辐射段热负荷为2280×103kJ/h,辐射管传热面积为960m2,求辐射管表面热强度。
题型:问答题 简答题 — Look at the boy playing basketball on the ground. Is it George?— It ________ be him. He told me he would play basketball after class, but he’s not sure.A.mustn’t B.mustC.can’tD.may 查看答案