第3题: [简答题]A: What is important when.... Choosing a hotel for business visitors ·Location. ·Cost ·Standard B: What is important when... Employing a secretary ·Experience ·Skills ·Personal qualities 参考答案: 答案解析:A.
When come to the question of choosing a hotel for business visitors,I think we should take t
第13题: [多项选择]控制钻孔垂直度的主要技术措施有( )。 A. 采用泵吸反循环清孔 B. 安装钻机时应严格检查钻机的平整度和主动钻杆的垂直度,钻进过程应定时检查主动钻杆的垂直度,发现偏差应立即调整 C. 定期检查钻头、钻杆、钻杆接头,发现问题及时维修或更换 D. 在软硬土层交界面或倾斜岩面处钻进,应低速低钻压钻进。发现钻孔偏斜,应及时回填黏土,冲平后再低速低钻压钻进 E. 在复杂地层钻进,必要时在钻杆上加设扶整器 参考答案:B,C,D,E