题目内容

News report-3Q7 What did the fisherman learn from the tourist agent?

A. His pearl could be displayed in a museum.
B. His monstrous pearl was extremely valuable.
C. The largest pearl in the world weighs 14 pounds.
D. A New York museum has the world's biggest pearl.

查看答案

搜索结果不匹配？点我反馈

更多问题

挖掘机的回转时间约占占工作循环时间的（）以上

A. 30%
B. 40%
C. 50%
D. 60%

动臂是反铲的主要部件，可分为和两种

整体式动臂分为和两种

按工作装置的形式分，挖掘机有、、和四种基本形式。