所谓道德是指一定社会调整人们之间以及个人和社会之间关系的（）的总和。

甲公司和乙公司由于合同纠纷而根据有效的仲裁协议提请仲裁，仲裁委员会经过审理作出仲裁裁决，请问仲裁裁决何时生效( )

A．仲裁裁决书自当事人签收之日起生效

B．仲裁裁决书自做出之日起生效

C．若仲裁裁决不能当庭送达双方，应以后收到裁决书的当事人签收的日期为仲裁裁决书的生效日期

D．以上均错误

集中式系统的一个主要优点是( )。

A．系统的健壮性好

B．系统扩展方便

C．系统安全措施实施方便

D．可以根据需要和存取方式来配置资源

阅读理解。

                                                                Life is difficult.

     This is a great truth, one of the greatest truths. It is a great truth because once we truly see this truth,

we transcend (超越) it. Once we truly know that life is difficult-once we truly understand and accept

it-then life is no longer difficult. Because once it is accepted, the fact that life is difficult no longer matters.

     Most do not fully see this truth. Instead they complain about their problems and difficulties as if life

should be easy. It seems to them that difficulties represent a special kind of suffering especially forced

upon them or else upon their families, their class, or even their nation.

     What makes life difficult is that the process of facing and solving problems is a painful one.  Problems,

depending on their nature, cause us sadness, or loneliness or regret or anger or fear. These are

uncomfortable feelings, often as painful as any kind of physical pain. And since life causes an endless

series of problems, life is always difficult and is full of pain as well as joy.

     Yet, it is in this whole process of solving problems that life has its meaning. Problems are the serious

test that tells us success from failure. When we desire to encourage the growth of human spirit, we

encourage the human ability to solve problems, just as in school we set problems for our children to

solve. It is through the pain of meeting and working out problems that we learn. As Benjamin Franklin

said, those things that hurt, instruct. It is for this reason that wise people learn not to fear but to welcome

the pain of problems.

1. The writer probably used just one short sentence in the first paragraph to  ______.

A. save space                              

B. persuade readers

C. make readers laugh                        

D. get readers' attention

2. According to the passage, we give school children difficult problems to solve in  order to______. 

A. encourage them to learn          

B. teach them to fear the pain of solving the problem

C. help them learn to deal with pain   

D. teach them how to respect for problems

3. From the passage, it can be inferred that ______.

A. everybody has problems

B. we become stronger by meeting and solving the problems of life

C. life is difficult because our problems bring us pain

D. people like to complain about their problems

酯化物的酯化率偏低，则分析项目中的（）。

A、酸值偏低

B、酸值偏高

C、色相b值偏高

D、二甘醇含量偏高

"望色十法"中的"沉"主（）

A.表证

B.里证

C.阴证

D.实证

E.阳证