未锻轧贱金属合金，按重量计算含铜62%、锌26%、铅11%、铝1%
参考答案：17 (7403.2100)
---- Can you tell me why __________?
---- Because I want to help the people there.
A. do you go to Tibet
B. did you go to Tibet
C. you are going to Tibet
在什么情况下，梁箍筋的弯钩可设在梁底部？
