钻具在定向井中,由于摩擦力作用,指重表所显示的钻压值与钻头实际所得到的钻压有一定的偏差。
参考答案:对
根据句意填空
1. she’s my s______Mary.
2. This is a p______of my family.
3. I l______my mother very much.
4. She is my pen f______ Emma.
5. My father’s brother is my u _____.
6. My mother’s sister is my a ______.
7. T______ are his brothers.
8. Thank you very m______.
9. S _____is my sister ,Jill.
10. —Is Lucy your d______?
—Yes ,she is .
根据我国现行规定,一般大中型项目的建设内容不包括( )。
A.根据可行性研究报告编制设计文件B.初步设计经批准后,做好施工前的各项准备工作C.组织施工,并根据工程进度,作好生产准备D.根据项目的咨询评估情况,对经济效益进行估算