轧机大小通常用轧机支撑辊辊身长度来表示。
参考答案:对
Who did the famous actress, Nicole Kidman, as well as the director, ___ the prince to the
concert which would be held in the open air?
A.has invited
B.has invite
C.have invite
D.have invited
滚筒的螺旋头数一般是()个。
A、1~3
B、1~2
C、2~4
D、3~5