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【简答题】
The Blacks are American tourists. They are visiting Beijing now. 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. Black is a taxi driver. He likes to drive in Beijing .Mrs Black is a school teacher. She is visiting a city school today and she’s going to visit a village school tomorrow. Their daughter is a middle school student. She is going to meet some Chinese students. They are taking a lot of pictures in China. When they go back to America, they are going to show the pictures to their friends. They want the American people to know more about China. 小题1:The Blacks are from . A.China B.England C.Canada D.the USA 小题2:The Blacks are staying in now. A.England B.Beijing C.Shanghai D.New York 小题3:Mr.Black is . A.a teacher B.a doctor C.a taxi driver D.a worker 小题4:There are people in Mr. Black’s family. A.two B.three C.four D.five 小题5:Why are they going to show the pictures to their friends when they go back to America? A.Because the pictures are very beautiful. B.Because they like China. C.Because they want the American people to know more about China. D.Because they want the American people to come to China.
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【单选题】套筒滚子链由链板、外链板、销轴、套筒及滚子组成。其中属于过盈配合连接的是( )
A.
销轴与套筒
B.
内链板与套筒
C.
外链板与套筒
D.
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销轴与套筒
B.
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C.
外链板与销轴
D.
滚子与套筒
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【单选题】套筒滚子链由链板、外链板、销轴、套筒及滚子组成。其中属于过盈配合连接的是( )
A.
销轴与套筒
B.
内链板与套筒
C.
外链板与套筒
D.
滚子与套筒
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【单选题】套筒滚子链由内链板、外链板、销轴、套筒及滚子组成,其中属于过盈配合连接的是__。
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销轴与套筒
B.
内链板与套筒
C.
滚子与套筒
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【单选题】套筒滚子链由内链板、外链板、销轴、套筒及滚子组成 ,其中属于过盈配合连接的是______。
A.
销轴与套筒
B.
内链板与套筒
C.
外链板与滚子
D.
滚子与套筒
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