问题
单项选择题
当对铝合金材料进行无损探伤时，应优先选用哪种检测方法？（）
A.磁粉检测法。
B.涡流检测法。
C.X射线检测法。
D.渗透检测法。
答案
参考答案：B
搜题请搜索小程序“爱下问搜题”
当对铝合金材料进行无损探伤时，应优先选用哪种检测方法？（）
A.磁粉检测法。
B.涡流检测法。
C.X射线检测法。
D.渗透检测法。
参考答案：B
When Wang Hai went to Yucai Middle School two years ago, he worked hard and did very well in his lessons. He was also _______ in sports. He ran to school every day to build up his _______. His parents were very _____ him and bought him a computer as a birthday present. However, something began to change. He stopped ______ early and never ran to school any more. He _____ his interest in studying. One day in the middle of the night. Wang Hai’s mother discovered the cause of the _____ . He played computer games till midnight. It had a ____ effect on him and must be stopped. The next day Mother had a ______ talk with Wang Hai. She took the computer away, she told him he wasn’t ______ enough to control himself. Wang Hai was happy he had a wonderful mother and _____ not to do that again.
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