变压器铭牌上标有额定电压UN±2×2.5时,是说明该变压器是()。A、三级调压 B、

题型:单项选择题

问题:

变压器铭牌上标有额定电压UN±2×2.5时,是说明该变压器是()。

A、三级调压

B、五级调压

C、有载调压

考点:泵站操作工考试泵站操作工考试题库
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如图所示,一小球用轻绳悬于O点,用力F拉住小球,使悬线保持偏离竖直方向75°角,且小球始终处于平衡状态。为了使F有最小值,F与竖直方向的夹角θ应该是

[ ]

A.0°

B.15°

C.45°

D.90°

题型:单项选择题

Your peers are people your age or close to it who have experiences and interests similar to yours. You and your friends make dozens of decisions every day, and you influence each other’s choices and behavior. This is often ________ --- it’s human nature to listen to and learn from other people in your age group.

Sometimes, though, the stresses in your life can actually come from your peers. They may pressure you into doing something you’re uncomfortable with, such as shoplifting, doing drugs or drinking, or taking dangerous risks when driving a car.

The pressure to conform(随潮流) can be powerful and hard to resist. A person might feel pressure to do something just because others are doing it. Peer pressure can influence a person to do something that is relatively harmless--- or something that has more serious consequences.

People may feel pressure to conform, so they fit in or are accepted, or so they don’t feel awkward or uncomfortable. When people are unsure of what to do in a social situation, they naturally look to others for cues(暗示)about what is and isn’t acceptable.

The people who are most easily influenced will follow someone else’s lead first. Then others may go along, too --- so it can be easy to think, “It must be OK. Everyone else is doing it. They must know what they’re doing.” Before you know it, many people are going along with the crowd --- perhaps on something they might not otherwise do.

Responding to peer pressure is part of human nature --- but some people are more likely to give in, and others are better able to resist and stand their ground.

It’s not always easy to resist negative peer pressure. But when you do, it is easy to feel good about it afterwards. And you may even be a positive influence on your peers who feel the same way --- often it just takes one person to speak out or take a different action to change a situation.

小题1:Which of the following is a kind of peer pressure?

A.Your teachers give you a lot of homework.

B.Your parents expect high scores from you.

C.Your classmates persuade you to cut class.

D.Your relatives invite you to attend a party.小题2:Which is most likely to be filled in the blank in Paragraph 1?

A.negative

B.impossible

C.positive

D.uncertain小题3:Most people tend to do what others are doing in order to _________.

A.feel a sense of achievement

B.get a feeling of being accepted

C.set a good example for others

D.stand out in a crowd小题4:What can we know according to the author?

A.Giving in to peer pressure is unavoidable.

B.Peer pressure usually leads to serious results.

C.Going along with the crowd usually means making a right choice.

D.Everyone can make a difference by resisting negative peer pressure.小题5:This passage is mainly about _______.

A.thoughts on peer pressure

B.different types of peer pressure

C.ways to deal with peer pressure

D.the influence of peer pressure on people

题型:单项选择题

意义学习

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离心式压缩机温度保护措施主要是检测和保护压缩机转子()的温度。

A.中心

B.边缘

C.两端轴承

D.气体

题型:单项选择题

焊接应力与变形产生的原因是对焊件进行了局部不均匀的加热和冷却。

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