问题
问答题 简答题
简述钻井中如何判断牙轮卡死?
答案
参考答案:
机械钻速明显降低、周期性蹩跳、转盘倒转。
简述钻井中如何判断牙轮卡死?
参考答案:
机械钻速明显降低、周期性蹩跳、转盘倒转。
根据对话内容,从方框内选出能填入空白处的最佳选项,其中有两项为多余选项。 A: Hello, Li Lei. Nice to meet you.
A: What’s your plan for the summer vacation? B: 小题2: A: Really? Are you going to Tianya Haijao? B: Yes, we’ve got tickets there. A: 小题3: B: Of course, I’m lucky enough. 小题4: A: I am going to Kunming with some of my friends. B: That sounds great. How long will it take? A: 小题5: Then I’ll be back home to visit my grandpa. B: Have a happy summer vacation! A: The same to you! |