吊钩钩身特别是危险断面有疲劳裂纹时应该()。
参考答案:报废停用
_____ in time for Christmas,all these gifts must be mailed immediately
A.So as to be received
B.In order to receive
C.So as to be receiving
D.In order to be received
阿里不哥归降忽必烈是在:()
A、1261年
B、1264年
C、1268年
D、1270年