【判断题】如果两根压杆的材料、长度、支承条件、横截面积都相同,则它们的临界压力必然相等
【判断题】如果如果两根压杆的材料、长度、支承条件相同,计算时惯性半径较大的压杆,其临界压力相对也大
【简答题】句型转换(每空一词)。 1. The students took the bus back to school after lunch. (改为同义句) After lunch the students back to school bus. 2. The boys in Grade Six had a great time at the zoo. (改为同义句) The boys in Grad...
【单选题】以下哪次会议将党和国家的工作重心转移到社会主义现代化建设上来
【简答题】你知道填哪一个更准确吗? 1. It's _ (on, in) the first floor. 2. Do you have lunch (at, in) school? 3. It's time (to, for) watch TV. 4. It's time (to, for) breakfast. 5. These are _ (he, his) pants. 6. Let (I, me)...
【简答题】阅读短文,请你判断下面各句是否正确,正确的在括号中写T,错误的写F. Hello . I am Jenny . Let me tell you something about schools in Australia .Usually , there is no school uniform(校服) . classes start at 8:30 every mo...
【简答题】选择下面句子的正确译文。 1. 让我们做午饭吧。 [ ] A. Let's make supper. B. Let's make lunch. C. Let make lunch. 2. 这些碟子非常干净。 [ ] A. These dish are very clean. B. The dish is very clean. C. These dishes are very cl...
【判断题】如果如果两根压杆的材料、长度、支承条件相同,则横截面积较大的压杆,其临界压力相对也大
【简答题】选出与划线部分意思相近的选项。 1. —What time is it now, please? — Let me see. Oh, it’s three fifty-five . A. fifty-five past three B. fifty-five to two C. five to three D. five to four 2. It’s time to have lunch . A...