税务机关依照有关法律、法规的规定，按照一定的程序，核定纳税人在一定经营时期内的应纳税

本期末有关账户的余额为；原材料100万元，发出商品69万元，委托加丁物资85万元，分期收款发出商品80万元，低值易耗品12万元，生产成本55万元，库存商品234万元，受托代销商品30万元，代销商品款30万元，物资采购58万元，材料成本差异(贷方)8万元，工程物资80万元，自制半成品45万元，在建工程400万元，特许储备物资120万元，存货跌价准备40万元，待处理流动资产损溢24万元．则期末资产负债表中“存货”项目的金额为( )万元。

A．690

B．770

C．890

D．920

My family and I lived across the street from Southway Park since I was four years old. Then just last year the city put a chain link fence around the park and started bulldozing (用推土机推平) the trees and grass to make ways for a new apartment complex. When I saw the fence and bulldozers, I asked myself, "Why don’t they just leave it alone"

Looking back, I think what sentenced the park to oblivion (被遗忘) was the drought (旱灾) we had about four years ago. Up until then, Southway Park was a nice green park with plenty of trees and a public swimming pool. My friends and I rollerskated on the sidewalks, climbed the trees, and swam in the pool all the years I was growing up. The park was almost like my own yard. Then the summer I was fifteen the drought came and things changed.

There had been almost no rain at all that year. The city stopped watering the park grass. With- in a few weeks I found myself living across the street from a huge brown desert. Leaves fell off the park trees, and pretty soon the trees started dying, too. Next, the park swimming pool was closed. The city cut down on the work force that kept the park, and pretty soon it just got too ugly and dirty to enjoy anymore.

As the drought lasted into the fall, the park got worse every month. The rubbish piled up or blew across the brown grass. Soon the only people in the park were beggars and other people down on their luck. People said drugs were being sold or traded there now. The park had gotten scary, and my mother told us kids not to go there anymore.

The drought finally ended and things seemed to get back to normal, that is, everything but the park. It had gotten into such bad shape that the city just let it stay that way. Then about six months ago I heard that the city was going to "redevelop" certain worn-out areas of the city. It turned out that the city had planned to get rid of the park, sell the land and let someone build rows of apartment buildings on it.

The chain-link fencing and the bulldozers did their work. Now we live across the street from six rows of apartment buildings. Each of them is three units high and stretches a block in each direc- tion. The neighborhood has changed without the park. The streets I used to play in are jammed with cars now. Things will never be the same again. Sometimes I wonder, though, what changes another drought would make in the way things are today.

According to the writer, what eventually brought about the disappearance of the park（）

A. The drought.

B. The crime.

C. The beggars and the rubbish.

D. The decisions of the city.

双滚筒采煤机具有两个结构（）的截割部。

A、前后对称

B、左右对称

C、上下对称

D、左右不对称

请你谈谈电气焊作业过程中的防火要求？