()表示塑料绝缘护套屏蔽铜芯软线,3芯1.5mm2。 A.RVV-3×1.5 B.B

题型:单项选择题

问题:

()表示塑料绝缘护套屏蔽铜芯软线,3芯1.5mm2

A.RVV-3×1.5

B.BVRP-3×1.5

C.RVVP-3×1.5

D.SYV-3×1.5

考点:电气识图考试电气识图考试题库
题型:单项选择题

请先阅读下面短文,掌握其大意,然后从下面方框的五个选项中,选择四个还原到文章中,使短文意思通顺、结构完整。

                                                             The Secrets of Happiness 

         1    Money and success alone do not bring lasting (长久的) happiness. Happiness depends on ourselves.

In other words, we make our own happiness. Here are a few suggestions to help you be happier. 

         2    Too often, we spend so much time thinking about the future -for example, getting into college or

getting a good job-that we fail to enjoy the present (现在). You should enjoy life's simple pleasures, such as

reading a good book, listening to your favorite music, or spending time with close friends.

      Another secret to leading a happy life is to be active, and have hobbies where you forget your problems.

Many people experience this dancing, or playing a sport, such as skating or soccer.    3    

      Finally, many people find happiness in helping others. According to studies, people feel good when they

volunteer their time to help others.    4    You can help a friend with his or her lessons, go shopping to buy

food for your family members, or simply help out around the, house by washing the dishes.

A. If you want to feel happier, do something nice for something.

B. The first secret of happiness is to enjoy the simple things in life.

C. Most people want to be happy, but few know how to find happiness.

D. People who have several close friends live happier and healthier lives.

E. You can forget about your problems, and only think about the activity.

1.                2.                 3.                4.            

题型:单项选择题

安静时脑耗氧量占全身耗氧量的()。

A.5%

B.10%

C.15%

D.20%

E.30%

题型:单项选择题

检查10岁儿童的牙列,尚未完全萌出的牙是()

A.A

B.B

C.C

D.D

E.E

题型:单项选择题

与项目运营无关的费用是( )。

A.专利及专有技术使用费
B.生产准备费
C.工程保险费
D.联合试运转费

题型:单项选择题

发光效率

更多题库