数据链路也称逻辑链路，数据链路的构成是：把（）的硬件和软件加到物理链路上。

国有股东协议转让上市公司股份的价格应当以上市公司股份转让信息公告日前20个交易日的每日加权平均价格算术平均值为基础确定；确需折价的，其最低价格不得低于该算术平均值的80%。( )

已知|m-2|+|3-n|=0，则-n^m=______．

Tips on Making a Decision

Decision-making never ends. It is an important part of everyday life, and it is how we choose our path.   小题1: Sometimes we leave things to luck. Other times we take a more active role. Here are some of the ways we usually make decisions.

◆ Make a list of pros and cons（利与弊）. When you try to make a difficult decision, you can take out a piece of paper, and then list the pros and cons of each choice.   小题2: 

◆ Ask a friend.  小题3: While I don’t think this is always true, I can see how friends can point out certain things that we may be unaware of. By getting a choice from a third party who knows us well, we can get good ideas that we didn’t take into consideration before.

◆ 小题4: Some decisions require that we know more about the subject we are deciding on. Making a choice without first doing some research can turn things into a nightmare（噩梦）, so don’t hurry. Take your time to search Google or Wikipedia or find a forum（论坛）to ask a couple of questions. Be careful and check your sources.

◆ Go to an expert. Seldom are we the most knowledgeable person on a particular subject. Our friends can sometimes be no better.  小题5: Investing（投资）? Talk to a market analyst. Feeling depressed? Go to see a psychologist. Not sure how to write a book? Discuss tips with other authors.

A．Do your research.

B．Leave our choices to chance.

C．We make decisions in all kinds of ways.

D．These can be important questions to ask.E.This can help provide a bigger picture of what you are working with.

F.In this case it may be better to get advice from an expert in the field.

G.Some studies have shown that others may know us better than ourselves.

鼻-鼻旁窦恶性肿瘤为T4N1M0，按肿瘤分期是（）。

A.0期

B.1期

C.2期

D.3期

E.4期

从降压变电站把电力送到配电变压器或将配电变压器的电力送到用电单位的线路都属于（）线路。

A、输电

B、架空

C、配电