世界上曾经有过不少桥梁在施工过程中由于失稳而导致全桥破坏的例子,最典型的为以下哪座桥梁()
A.金门大桥
B.明石海峡大桥
C.博斯普鲁斯海峡大桥
D.魁北克桥
参考答案:D
凡能取得最低钻进成本各种技术措施的组合,就是最优钻进技术措施。
Hurry up. The lecture begins at 2:00.()
A.Don‘t worry. We‘ve got 20 minutes.
B.Thank you. No hurry.
C.Never mind. You go if you like.
D.The lecture is useful.