抽油杆吊钩是在起下抽油杆作业时连接游车大钩与（）的专用井口工_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题填空题

抽油杆吊钩是在起下抽油杆作业时连接游车大钩与（）的专用井口工具.

答案

参考答案：吊卡

阅读理解

看图，给问句选择正确的答语。

( ) 1. Where is the trash bin?
( ) 2. Where is the picture?
( ) 3. Where is the air-conditioner?
( ) 4. Where is the chair?
( ) 5. Where is the lamp?

A. It's on the table.
B. It's over the closet.
C. It's on the wall.
D. It's near the table.
E. It's under the table.

问答题简答题

吸收和解吸的原理是什么？