防止轿厢和对重在运行过程中偏斜或摆动的装置是:().
A.导轨
B.导靴
C.曳引轮
D.钢丝绳
参考答案:B
The Turners are American. They are now in Beijing. This is their first visit to China.
They are going to stay in China for three months. They want to visit some big cities and villages. They hope to learn some Chinese, too.
Mr Turner is a driver. He likes to drive in Beijing. Mrs Turner is a school teacher. She is visiting a city school and a village school. Their daughter is a middle-school student. She meets some Chinese students.
They take a lot of pictures in China. When they are back in America, they are going to show the pictures to their friends. They want the American people to know more about China.
根据短文内容,回答下列问题。
小题1:Where are the Turners from?
小题2:What is Mr. Turner?
小题3:Is Mrs. Turner's daughter a middle-school student?
小题4:How many people are there in Mr. Turner's family?
小题5:Why do they take a lot of pictures in China?
王叔叔从家到学校,步行每小时走8.5千米,0.6小时到达学校.如果改为骑车,每小时行20千米,那么0.25小时能到达学校吗?