问题
单项选择题
无砟18号高速道岔岔枕配置，当线间距4.6m时，岔枕共计（）根。
A.133
B.139
C.144
D.167
答案
参考答案：A
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无砟18号高速道岔岔枕配置，当线间距4.6m时，岔枕共计（）根。
A.133
B.139
C.144
D.167
参考答案：A
It is summer vacation and school is closed. Children don’t need to study 1 exams. During the summer vacation, many children stay at home to 2 TV, eat delicious food and play with 3 friends. Some take part in (参加) a neighborhood program, go to 4 museums or go camping. A camp is a summer vacation place for 5 . They can go swimming, climb mountains, go to the beach or go hiking. Now, there are 6 camps. They are not expensive. At these camps, children learn 7 to use computers. Most children enjoy playing computer games. At the computer camps, they can learn some things about the computer, 8 friends and talk about some things 9 their friends. If you don’t have a plan yet, a computer camp should be a 10 choice(选择).
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