TG480QZ钢的用途是()。
A.汽车刹车片用钢
B.汽车传动轴用热轧板卷
C.汽车板
D.汽车大梁钢
参考答案:B
Mary has many nice dresses. She wears a different one every day the week.
A.by
B.from
C.at
D.for
为什么会发生水击?水击对设备有什么危害?