A new technique（）,the producity of loading as a whole increased by 20 percent.<br>A:working out<br>B:having been worked out<br>C:having worked out<br>D:to have been worked out

A new technique（）,the producity of loading as a whole increased by 20 percent.
A:working out
B:having been worked out
C:having worked out
D:to have been worked out

出自：海船船员证

提示：
同一【IP】的非会员用户每天可免费获取10次答案

收藏本站【zk.995w.com】，下次访问不迷路

本站试题总数:【10252937】个 (题库试题定时更新)