在标准大气压(1.01×105Pa)下,面积为20m2的房顶上表面受到的大气压力 发布时间:2017-06-27 18:44 │ 来源:www.tikuol.com 题型:填空题 问题: 在标准大气压(1.01×105Pa)下,面积为20m2的房顶上表面受到的大气压力的大小为______N.
题型:填空题 —Would you like to join us in dancing party in our school tonight?—I'm afraid not. I have _____ appointment with my doctor[ ]A. a; the B. the; theC. a; an D. the; an 查看答案