问题
单项选择题
在调整钢索的松紧螺套时，钢索的端杆外露不可超过几个螺纹（）
A.四个
B.三个
C.二个
答案
参考答案：B
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在调整钢索的松紧螺套时，钢索的端杆外露不可超过几个螺纹（）
A.四个
B.三个
C.二个
参考答案：B
| 完形填空。 Hello. everyone! My name is Ann. I 1 from America. I am in China. I will tell you something about my 2 . There are 3 people in my family. They are my grandparents,my parents and I. My father is a worker. My mother is a doctor. They 4 hard. I am in Grade 3 now. I enjoy 5 . But I 6 good at Chinese. I must read many books. My 7 is near a river. 8 a photo of my family. You can 9 lots of people in it. I 10 my family very much. | ||||
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