问题 问答题 简答题

怎样打捞井下落物?

答案

参考答案:

处理打捞井下落物事故时,必须充分发动群众,群策群力。必须做到:

(1)调查研究:搞清落物位置,形态状况,带的钢丝数、工具件数等。如搞不清,先要试探、打铅膜、准确判断,选择合适的打捞工具。

(2)确定打捞工具:根据落物形态,位置,选择矛头及重杆。

(3)制定打捞措施:制定出分步骤有效处理办法,人员工负责。

(4)准备工作:接防喷管,加固扒杆、绷绳、绞车,焊钢丝记号,装好转数表,连接好矛头和加重杆。

(5)试下:将矛头缓慢下放,根据轻重变化和遇阻情况,判断是否挂上。多次试探(一次不能下的深度过深),分段摸索。如挂上、应轻摇。当钢丝吃力后,注意避免发生钢丝反弹或绞车打人事故。如工具卡在井口,可半压井,取出落物。

(6)矛头应能抓、能脱;若用硬钩,应在每个钩的根部锯一个口,当吃力过大时,钩就断了(脱钩),不致再将打捞工具卡着。如落物太深,或卡的过死时,可选用直径粗一些的钢丝绳打捞。

选择题
阅读理解

Don’t be surprised when strangers talk to you in Canada! You will find that many Canadians will smile at you as they pass in the street, or say something to you like “Hi!” or “How’s it going?” Just reply with something similar. In the UK the reply would be “I’m fine”, but in Canada they say “I’m good”.
In company, when someone is offering you a second helping of food or more wine, if you don’t want any more, use the same expression— “I’m good”. In this case, it means “No, thank you. I’ve had enough”. Most Canadians don't press you to eat more than you want.
In restaurant, your plate will be cleared away almost immediately you have finished eating. When you go into a shop or store, the shop assistant asks you how you are or if they can help you, it is their way of being friendly and making conversation with the customers.
Canadians eat early and go home early. When you are invited to a Canadian’s home, you may be asked to arrive at 5:30 pm or 6 pm. But guests in Europe don’t expect to arrive until 7:30 pm or 8 pm. Remember to take off your shoes and leave them inside the door without being asked. It’s not a religious custom, but it’s practical. In winter, there can be a lot of snow and dirt on your shoes, once you are in the warm house it melts and falls off, making a mess. Canadians tend to have light colored carpets or hardwood floors.
If you’re invited for dinner, it will be a full sit- down meal. Meat is usually barbecued in the freezing cold of winter. Do take something with you, like a bottle of wine. Arrive on time and don’t stay over 10 pm.
1. Which of the following statements is NOT true according to the passage?
A.
“I’m good” can mean you do not need more food in Canada.
B.
In Canada, you will meet strangers in the street saying “Hi” to you.
C.
In a Canadian restaurant, the plates will stay at the table until you leave.
D.
Canadians usually say “I’m good” to answer the greeting of “How’s it going?”
2. If you are invited for dinner in your Canadian friend’s home, ________.
A.
you will have a full sit-down meal
B.
you don’t have to bring any gift for the host
C.
you are expected to arrive at 7:30 or 8 pm
D.
you don’t have to take off your shoes when you enter the room
3. When a Canadian shop assistant says “How are you?” to you, it suggests that _______.
A.
they hope to make friends with you
B.
they want to ask you for help
C.
they are very friendly to customers
D.
they are your good friends
4. What can we learn from the passage?
A.
Canadians like dark colored carpets.
B.
In Canada, meat will not be barbecued even in the cold winter.
C.
You will always be asked to eat more food than you want in Canada.
D.
It is usually rude to stay over 10 pm in your Canadian friend’s home.
5.What would be the best title for this passage?
A.
Some customs in Canada
B.
Dinner party rules in Canada
C.
Studying in Canada
D.
Doing business in Canada