—Airplane design is a job ______ you to work 10 to 12 hours a day and sometimes seven days a week.

—_______. I think airplane design needs good teamwork as well. [ ]

A. that need; So it is

B. that needs; So it is

C. which needs; So is it

D. which need; So is it

简述用铲运机进行铲运作业的施工技术是什么？