媒体网关的媒体流能支持的编码格式包括（），G.711u，G.723，G.729.

仓库库存甲材料单位成本10元／公斤，乙材料单位成本20元／公斤。生产车间从仓库领用如下材料：领用甲材料150公斤、乙材料100公斤用于生产A产品；领用甲材料120公斤、乙材料80公斤用于生产B产品；用于车间共同耗用的甲材料270公斤；销售部门领用甲材料50公斤用于销售，销售价格20元／公斤，则以下说法正确的是（）。

A.所有经济业务共耗用乙材料3500元

B.生产B产品耗用直接材料成本为3500元

C.生产A产品耗用直接材料成本2800元

D.销售甲材料时应借记其他业务成本500元

基金绩效衡量的目的是把具有极大升值潜力的基金挖掘出来。（）

阅读理解

     When it comes to friends, I desire those who will share my happiness , who possess wings of their

own and who will fly with me. I seek friends whose qualities illuminate (照亮) me and train me up for

love. It is for these people that I reserve the glowing hours , too good not to share.

     When I was in the eighth grade.l had a friend. We were shy and "too serious" about our studies

when it was becoming fashionable with our classmates to learn acceptable social behaviors. We said

little at school,but she would come to my house and we would sit down with pencils and  paper , and

one of us  would  say , " Let's start with a train whistle today. " We would sit quietly together and write

separate poems or stories that grew out of a train whistle. Then we would read them aloud. At the end

of that school year,we, too, were changed into social creatures and the

stories and poems stopped.

     When I lived for a time in London,l had a friend. He was in despair (失望) and I was in despair. But

our friendship was based on the idea in each of us that we would be sorry later if we did not explore this

great city because we had felt bad at the time. We met every Sunday for five weeks and found many

excellent things. We walked until our despairs disappeared and then we parted.We gave London to each

other.

     For almost four years I have had a remarkable friend whose ilnagination illuminates mine. We write

long letters in which we often discover our strangest selves. Each of us appears,sometimes in a funny way,

in  the other's  dreams. She and I agree that, at certain times,we seem to be parts of the same mind. In

my most interesting moments,l often think "Yes . I must tell. . ." We have never met.

      It is such comforting companions I wish to keep. One bright hour with their kind is worth more to me

than the lifetime services  of a psychologist (心理学家 ) , who will only fill  up  the. healing(愈合的)

silence necessary to those darkest moments in which I would rather be my own best friend.

1. In the eighth grade, what the author did before developing proper social behavior was to________.   

A. become serious about her study

B. go to her friend's house regularly

C. learn from her classmates at school

D. share poems and stories with her friend        

2. In Paragraph 3, "We gave London to each other" probably means _________.   

A. our exploration of London was a memorable gift to both of us

B. we were unwilling to tear ourselves away from London

C. our unpleasant feeling about London disappeared

D. we parted with each other in London

3. According to Paragraph 4, the author and her friend_________.   

A.call each other regularly

B. have similar personalities

C. enjoy writing to each other

D. dream of meeting each other

4. In the darkest moments, the author would prefer to________.  

A seek professional help        

B. be left alone

C. stay with her best friend      

D. break the silence

5. What is the best title for the passage? ________.

A. Unforgettable Experiences

B. Remarkable Imagination

C. Lifelong Friendship

D. Noble Companions

铸铁锅炉主要用于（）。

A.采暧；

B.生产；

C.发电。

添加降凝剂时，对不同油品要先做（）试验，应在油品的晶粒（）加入，否则起不到降凝作用。