邀请招标是一种非公开招标方式，被邀请参加投标的承包商通常在( )。A．3个以上 B

金无足赤，人无完人，朋友难免有缺点；人各不同，朋友之间难免有分岐，因此我们应该[ ]

A．多交朋友  

B．广交朋友  

C．多交损友  

D．宽容他人，加强沟通，交更多的诤友

完成对话。

A: Hello !小题1:

B: Yes . What’s up ?

A:小题2:Could I borrow your bike again ?

B: Certainly .小题3:Has your bike been broken again ?

A: No . I’ve lost my key to the bike . But I have to go to see a friend .

B: I see .小题4:

A: About four o’clock .

B: OK . Here is the key .

A:小题5:

B: Bye !

Are you dreaming of taking a trip on your own Here is some advice on how to make your once-in-a-lifetime journey and how to stay safe when you get there.
Before you begin to look at places, activities and plane tickets, you must set a budget. When you search through the websites about travelling, it can be so easy to add another week here or there, or choose an extra activity. Setting a budget can avoid creating a huge bill, which starts very small.
With so many countries on this planet it is difficult to decide where to go. By narrowing down your search to voluntary work or a relaxing holiday, you can save a lot of time looking through websites.
After deciding where to go, you need to research the country. Find out when each season is. It would be disappointing if you were taking part in an outdoor-based activity and it rained most days. Look into medical information, as you may need certain medicine for certain countries. Above all, make sure you can afford to go to this country and take part in the activities you have dreamt about. Don’t raise your hopes too high before you know for certain it is within your budget.
By carrying a credit (信用) card with you at all times it is possible to stop yourself getting lost. Mobile phones are very important as well. However, do not depend completely on them, since electronic machines can break without warning. Therefore, always carry a list of emergency (紧急情况) phone numbers, names and addresses. Finally, learn a little of the language. Do not expect that the people there speak your own language. After all, you are in their country.

From the text, we can know that ______.

A．travelling in a foreign country costs a lot
B．deciding on where to go is an easy job
C．a volunteer can help you choose where to go
D．you need to know what the weather of the county you’ll travel is like

萃取器V61302工况及指标？