钢板上割制圆环零件时，常采用（）排料法。
A.排样套料
B.分块
C.长短搭配
D.集中
参考答案：B
– Where does your brother work, Jane?
-- In America. But he __________in China for 5 years.
A．has been working
B．has worked
C．worked
D．was working
在毛 * * 去重庆谈判期间，由谁代理中 * * * * 职务？
