【简答题】当钻头在地下钻井,会产生大量的 , 。堆积在 附近。如果不及时清理出来,钻头是无法工作的。所以需要 能实时把泥土、岩屑等带回到地面。 2 、钻井液的主要作用之一是平衡地层中的 ,防止 等井下复杂情况。
【简答题】Itwas not clear the man hadn’treported the accident sooner.A. that B. how C. when D. why
【简答题】It was foolish of the girl not to have asked your name. 10. It is understandable that her appointment has not been confirmed. 11. It is curious that the dog should have never barked. 12. People were w...
【单选题】It was ______ that I didn’t want to leave my room.
【单选题】It was time for class. We stopped__________ football.
【单选题】It was________ bad weather ________ we had to stay at home.A. so that B. such a so
A.
9.It was________ bad weather ________ we had to stay at home. A. so that
【判断题】互换性按其互换程度可分为完全互换和不完全互换两类。