氧气顶吹转炉炉衬普遍使用（）。 A.焦油白云石砖 B.高镁白云石砖 C.轻烧油浸砖

有关共有财产的叙述，错误的是（）。

A.按份共有人按照各自的份额，对共有财产分享权利，分担义务

B.按份共有财产的每个共有人有权要求将自己的份额分出或者转让，但需经其他共有人同意

C.共有财产的共有形式分为按份共有和共同共有

D.按份共有财产的每个共有人在转让自己的份额时，其他共有人在同等条件下，有优先购买的权利

女，40岁。因慢性阑尾炎急性发作10小时入院。查生命体征正常，血常规Hb126g／L，WBC13．24×10／L。急诊行阑尾切除术，术中见阑尾粘连，周围有约15ml脓液，术后引流管未见液体流出。术后第6天切口感染流脓。查体T38．8℃，P126次／分，BP97／65mmHg，WBC11．25×10／L，N75％，L24％，PLT523×10／L。

本例发生切口感染最可能的原因是（）

A.属Ⅲ类切口，术后引流不畅

B.与手术时无菌观念不强有关

C.与手术缝线选择不当有关

D.未及时换药

E.脂肪坏死液化

Uncle Li and Uncle Wang are good friends. They live next to each other and their farms are both at the foot of the mountain. So they can help each other. But neither of them likes to use his head. They’re both poor though they work hard. Most villagers have built new houses, but they still live in the low and broken houses. They never find out why.
Once Uncle Li went to the town to buy some medicine for his wife. In the town he heard apples in a city were expensive. He told Uncle Wang about it as soon as he went back. They decided to carry some apples to the city. They borrowed some money from their friends and bought nearly 1,000 kilograms of apples in the villages and carried them to the city on a tractor. Bad luck! A lot of apples has already been carried there when they arrived. A few days later they had to sell them at a low price. They felt unhappy and returned to their village.
"I can’t understand why we sustained (蒙受) losses in business while others always profit (盈利)" Uncle Li asked one day.
"The tractor was too small" Uncle Wang said without thinking. "We’ll carry more apples on a truck next time!"
"I agree!" said Uncle Li. "How foolish we were!\

Uncle Li and Uncle Wang were unhappy because ______.

A．they had sustained losses in business

B．they had lost some money in the city

C．something was wrong with the tractor

D．other people profited in the city

常色叶树

工程造价也是评价建筑安装企业管理水平和经营成果的重要依据。( )