第一个用实验的方法，准确测出大气压强数值的科学家是（） A.阿基米德 B.托里拆利

-It’s too hot. Would you mind____   the door?  

-____     Please do it now.   [ ]

A. to open; OK        

B. opening; Certainly not    

C. opening; Of course    

D. to open; Good idea

金属材料硬度常用的测定方法为布氏法、洛氏法等，故硬度指标有：布氏硬度、洛氏硬度。洛氏硬度指标可以用以下哪些表达（）

A.HRA

B.HRB

C.HRC

D.H

E.HRR

下列关于入侵防护系统(IPS)组成模块的描述中，错误的是______。

A．检测分析组件通过特征匹配、流量分析、协议分析、会话重构等技术，并结合日志中的历史记录来分析攻击类型和特征

B．所有接收到的数据包都要通过策略执行组件进行转发

C．日志数据的来源是检测分析组件和策略执行组件，控制台是日志的使用者

D．控制台负责接收来自检测分析组件的状态转换指令，并驱动策略执行组件转换工作状态，对分布式拒绝服务攻击进行有效防御

To be a good friend, you have to give of yourself, nonetheless not so much that you lose yourself. This is a pretty predictable recipe for happiness. Giving to others—a reliable way of fostering friendships—makes us happier than taking things for ourselves. In the light of research led by Dr. Elizabeth Dunn at the University of British Columbia, money can purchase happiness...on the prerequisite that you utilize it on other people.

Researchers administered three studies consecutively. First, they surveyed more than 600 Americans and found that spending money on gifts and charities led to greater happiness than spending money on oneself.

Subsequently they probed into workers who had just received bonuses and observed that their happiness did not hinge on the size of their bonus but on the decision they made about what to do with whatever amount of money they received. Those who spent more of their bonus on others were happier than those who spent the money on themselves.

Finally, the researchers simply distributed money to a good many subjects, instructing some to spend the money on themselves and others to spend the money on others. At the end of the day, the ones who spent money on others were a good deal happier.

As a consequence, having friends and treating them generously is clearly a winning strategy in life. But what about in business

If you watch even a single episode of any reality TV show based on a competition, such as The Apprentice, you’ll hear a single phrase crop up more often than any other: "I’m not here to make friends!" Is that true Are we better off being cutthroat than collaborative

Once you’re on the job, having a best friend at work is a p predictor of ensuing success. People might define "best" loosely (think of this as kindergarten where you can have more than one "best" friend), but according to a Gallup Organization study of more than 5 million workers over 35, 56% of the people who say they have a best friend at work are engaged, productive, and successful while only 8% of the ones who don’t are.

Another remarkable study, spanning decades, revealed that friendships in high school were an effective predictor of increased wages in adulthood—to the tune of 2% per person who considered you a close friend. To put it otherwise, if in high school three people regarded you as one of their closest same-sex friends, your earnings in adulthood work would be 6% higher.

The happy truth is that the competitors who say they’re not here to make friends don’t win eventually. That’s true for reality TV, for business, and for life as well.

According to the passage, it would be better for high-school students to（）

A. make more close friends

B. learn to give of themselves

C. work more often in collaboration with other students

D. have a plan to gain a high paid job after graduation

气体保护焊直接依靠从喷嘴中连续送出的气流，在（）造成局部的气体保护层。

A.电弧周围

B.焊缝之内

C.接头区域

D.焊件之上