问题
单项选择题
车轴裂纹发生在（）约占全部车轴裂纹的97%。
A.轴颈
B.轴颈根部
C.防尘板座
D.轮座部
答案
参考答案：D
搜题请搜索小程序“爱下问搜题”
车轴裂纹发生在（）约占全部车轴裂纹的97%。
A.轴颈
B.轴颈根部
C.防尘板座
D.轮座部
参考答案：D
| 完形填空。 | ||||
| I'm a boy from a poor (贫穷的) family. I 1 . in a very small school. There is only one 2 . in our school. We study in this house. There are many 3 . in our school. We are from eight years old 4 . twelve years old. We also 5 . only one teacher. She is 6 . and slim. Every day she teaches(教) 7 . to read and write. She is funny. We all 8 . her very much. Our school begins at 7:00a.m. From Monday to Friday, all of us 9 . to school. We love 10 . football with Miss Wang after class. | ||||
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