题目

根据句意及首字母提示完成单词。 (1) Go a this street, and you'll see it. (2) Get off the bus at the first c. (3) It doesn't need any m. It's free today. (4) I hope you'll e yourself on holiday. (5) I like to s time there on weekends. 答案:【1】along 【1】crossing 【1】money 【1】enjoy 【1】spend如图,密闭气缸两侧与一U形管的两端相连,气缸壁导热;U形管内盛有密度为ρ=7.5×102kg/m3的液体.一活塞将气缸分成左、右两个气室,开始时,左气室的体积是右气室的体积的一半,气体的压强均为P0=4.5×103Pa.外界温度保持不变.缓慢向右拉活塞使U形管两侧液面的高度差h=40cm,求此时左、右两气室的体积之比,取重力加速度大小g=10m/s2 , U形管中气体的体积和活塞拉杆的体积忽略不计.
英语 试题推荐