对溶剂不十分敏感的塑料制品,采用( )等揩拭,也可采用中性或碱性洗涤剂清洗。A.甲

题型:单项选择题

问题:

对溶剂不十分敏感的塑料制品,采用( )等揩拭,也可采用中性或碱性洗涤剂清洗。

A.甲醇

B.甲苯

C.甲醛

D.甲烷

考点:涂装工初级涂装工初级
题型:单项选择题

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项,并在答题卡上将该项涂黑。选项中有两项为多余选项。

Are you truly happy? Do you ever know what it means to be happy and what it takes to achieve happiness?小题1:The following are a few tips that I follow to create happiness in my life.

* Make a plan for attaining goals that you believe will make you happy. Your moods will very likely increase if you are going after something you value.

* Surround yourself with happy people. It is easy to begin to think negatively when you are surrounded by people who think that way.小题2:.

* When something goes wrong, try to figure out a solution instead of being absorbed in self pity.Truly happy people don’t allow setbacks to affect their mood because they know that with a little thought they can turn the circumstances back to their favor.

*小题3:. These few minutes will give you the opportunity to focus on the positive things in your life and will lead you to continuous happiness.

*小题4:. Whether you treat yourself to lunch, take a long, relaxing bath or simply spend a few extra minutes on your appearance, you will be subconsciously (下意识地) putting yourself in a better mood.

* Finding the humor in situations can also lead to happiness. Find a way to make light of a situation that would otherwise make you happy.

* Keeping healthy is another way to achieve happiness. 小题5:.

A.What makes one person happy may be very different from what makes someone else happy.

B.On the contrary, if you are around people who are happy their emotional state will be infectious.

C.Being overweight or not eating nutritious foods can have a negative effect on your mood.

D.These are important questions for anyone who is seeking happiness to ask themselves.E. Spend a few minutes each day thinking about the things that make you happy.

F. There are some tips in life that lead to happiness.

G. It’s also important to take some time each day to do something nice for yourself.

题型:单项选择题

根据国标GB50028,门站和储配站内设置的计量仪表应记录什么参数?

A.燃气湿度、热值和温度 

B.燃气流量、压力和热值 

C.燃气流量、压力和温度

题型:单项选择题

In Britain today, is it possible to tell a person’s class just by looking at him? Physical details alone tell us about health, diet and the type of work a person does. A hundred years ago the working class often looked unhealthy, small and they were either too thin or too fat. The upper classes were often tall, sporting types who were used to a good diet and looked healthy. Today living and working conditions have improved, and such descriptions are no longer true. People are taller now than a hundred years ago. Everyone in Britain today is able to have free medicine, a good diet, acceptable working conditions and enough rest and leisure.

The clothes people choose to wear, however, do provide information about their backgrounds. Expensive clothes look expensive and show their wearer is rich. Clothes can provide other clues as well. The upper classes appear to be less interested in fashion and wear good quality clothes in non-bright colours, made of natural material like wool, leather and cotton. Lower working-class people often choose clothes in bright colours, made of man-made materials. A sociological explanation for this would be that colour and interest are missing from their lives, and therefore any opportunity to produce this is taken.

Clothes are available at a price within most people’s reach. New clothes make the wearer feel good and show some degree of wealth to the outside world. Today it is the younger people who spend most money on clothes. Fashion is no longer for the upper classes and the rich. Young people from all social classes spend a lot of money on clothes. Some new fashions are started by working—class people who want to look different and feel important. They want people to look at them.

1. In the past, a person’s appearance could not tell other people about his ________.

A. health          B. diet             C. occupation          D. habits

2. The clothes people choose to wear tell us about their ________.

A. education          B. richness         C. backgrounds        D. hobby

3. A working—class person may start a new fashion because ________.

A. she wants to draw the attention of other people

B. she wants to look different and healthy

C. she wants to show their wealth

D. she wants to show their taste

4. Which of the following statements is NOT true?

A. Expensive clothes look expensive and show the wearer is rich.

B. Working—class people prefer clothes in bright colours because they lack colour in their lives.

C. Today, it is still the upper class people who spend most money on clothes.

D. Today, fashion is no longer for the upper classes and the rich.

题型:单项选择题

下面是有关光盘存储器的叙述
Ⅰ.所有的光盘存储器都是可读可写的
Ⅱ.DVD光盘的存储容量比CD光盘的存储容量大得多
Ⅲ.光盘的信息存储在一条由里向外的螺旋光道上
Ⅳ.光盘的信息以凹坑的形式存储在光盘上,凹坑里面的平坦部分为1,非凹坑的平坦部分为0
其中正确的是( )。

A.仅Ⅰ和Ⅱ

B.仅Ⅱ和Ⅲ

C.仅Ⅲ和Ⅳ

D.仅Ⅰ和Ⅳ

题型:单项选择题

PTP600系列非视距微波ODU采用的馈电供电方式为().

A.交流220V

B.直流-48V

C.直流-55V

D.直流-24V

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