室内排水系统设置通气管的目的有( )。A．减少排水管内空气压力波动 B．保护存水弯 发布时间：2022-08-18 16:48 │ 来源：www.tikuol.com 题型：多项选择题 问题： 室内排水系统设置通气管的目的有( )。A．减少排水管内空气压力波动B．保护存水弯的水封不被破坏C．防止排水管道被异物堵塞D．防止外界空气异味进入排水管道内
题型：多项选择题 短文填空。by together housework invited is however anyone that one As the World Cup is going on, South Africa's football grandmothers are also working hard. The team 1 made up of 35 women, aged from 50 to 84. It was developed 2 a housewife five years ago to help old womenkeep fit. The project has been so successful 3 they will take part in the Veterans Cup competition (元老杯足球联赛) in the USA. "We are 4 to play in the Veterans Cup, where many grandmothers from all over the world come 5 andplay football," said the team leader. Whatever happens, 6 , the grandmothers have no regrets. Most of them often play football in their aprons(围裙) after 7 . "I suffered back pain and sore knees (腰酸腿痛) before joining the team three years ago. Now I am fresh. I don't feel 8 pain in my body, and I can run. At home I do all the housework by myself!" said 9 of the grandmothers. 1. 2. 3. 4. 5. 6. 7. 8. 9. 查看答案
题型：多项选择题 据统计，1903年英国新兴工业部门的产值占工业总产值的6．5％。由此可见英国 [ ]A．工业发展比较缓慢 B．工业设备比较落后 C．经济落后于其他国家 D． 没有形成垄断资本 查看答案