下列接地中,用于保护人身和设备安全的是()A、防雷地 B、工作地 C、保护地 D、都

题型:单项选择题

问题:

下列接地中,用于保护人身和设备安全的是()

A、防雷地

B、工作地

C、保护地

D、都是

考点:移动综合接入专业考试移动综合接入公共科目移动综合接入公共科目题库
题型:单项选择题

患者男性,59岁,缺失,余留牙均健康

可摘局部义齿修复,基牙应该选择()

A.A

B.B

C.C

D.D

E.E

题型:单项选择题

射频控温热凝术热凝的温度是()

A.50℃~60℃

B.60℃~80℃

C.50℃以下

D.90℃以上

E.70℃~90℃

题型:单项选择题

(2014届东北三省四市高三第一次模拟考试理综化学试卷)

芳香族化合物A的分子式为C7H6O2,将它与NaHCO3溶液混合微热,有酸性气体产生,那么包括A在内,属于芳香族化合物的同分异构体数目是

A.2

B.3

C.4

D.5

题型:单项选择题

阅读理解

     When I was younger, I wished for a Porsche and a big house. That was my idea of success. I took all the advanced classes possible and took the exams with my mind set on going to a key school. I just knew

that I would somehow become famous and be able to afford that car and the dream house. All the way

through junior year, my mind was planning this beautiful future.

     Then in the eleventh grade, many losses changed my mind. First, one of my friends died at the age of

16. Soon after, my great-grandmother passed away, and on the same day, my beloved fourth-grade

teacher. They left me not knowing what to do or where to go. Death had never touched me so closely.

      After a long period of emptiness, it finally struck me; life is not promised and neither is my future

success. While I was going through the actions in an attempt to achieve material success, I was not

enjoying my daily life. I was just existing. It occurred to me that life has more purposes than acquiring

possessions, which will only be yours until you can no longer keep up with the payments. I realized that

finding inner peace, purpose and happiness will stick with you forever and that is real success.

     Enjoying life's precious changes makes a person more successful than a wealthy person who is not

content and takes everything for granted. The summer before senior year, my attitude changed greatly.

Instead of memorizing facts, I began learning information. Instead of focusing on the future, I focused on

today and the blessings and successes that come with it.

     I still make excellent grades, but now I dedicate weeks to studying instead of preparing for exams,

and I think about the future with a deeper sense of meaning. Success, just like beauty, is in the eye of the

beholder(旁观者). For me, being successful means truly living life each day, being thankful, and affecting

the world.

1.The main idea of the first paragraph is ____________.

A. the writer drew a beautiful picture for his future

B. the writer was an intelligent student at school

C. the writer was mad for success

D. the writer devoted himself to material success

2.Which of the following statements is TRUE according to the passage?

A..People can truly enjoy daily life by trying to achieve material success.

B.Success can only be measured with a Porsche and a big house.

C.People should concentrate on today and success will follow afterwards.

D.The pursuit of inner peace, purpose and happiness is a real success.

3.  The purpose of the writer is probably to ____________.

A..advise us to have a correct attitude towards success

B.inspire us to lead an active life each day

C.remind us to set a goal for our life

D.persuade us to work hard to achieve our success

题型:单项选择题

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