根据国标GB50028,国内一般运行中的机械接口球墨铸铁管的最高工作压力为多少?A.

题型:单项选择题

问题:

根据国标GB50028,国内一般运行中的机械接口球墨铸铁管的最高工作压力为多少?

A.0.4MPa 

B.0.2MPa 

C.0.1MPa

考点:燃气安全环保知识竞赛燃气安全燃气安全题库
题型:单项选择题
When Sandy was a little girl, she liked keeping pets. She had many books about animals and many pictures of animals on the walls of her bedroom. She often said that she would work in a  41  when she grew up.
Most of Sandy’s pets were quiet small—parrots, cats, dogs and so on. But one day she met something quite  42 .
That afternoon, Sandy’s mother was surprised to see a big animal with long hair in the kitchen. He  43  a T-shirt and was sitting on the chair, trying to put on a pair of glasses and making faces at her. In front of him, on the table, were a basket of fruits and a glass of water. “Sandy, where are you?” the mother shouted. Then suddenly she remembered that a few days before a young gorilla (大猩猩) called Jim had run away from the zoo.
“I found him in the city square,” Sandy said. “He seemed so  44 . I talked to him. We became friends at once and he followed me home.”
“Well, you know you  45  keep him,” her mother said. “You must send him back to the zoo. You’d better phone the police.”
Soon a  46  came and also a truck from the zoo.  47  was angry with Sandy when she told her story. The policeman knew Sandy loved animals. And the zookeeper said, “Thank you for your kindness. I can see Jim likes you,  48  we need to take him back.” Sandy agreed. She hugged Jim and said that she would go and see him  49 .
These days Sandy has stopped collecting  50 , but you can still find her with her friend Jim at the zoo on Saturdays and Sundays.
小题1:
A.hospitalB.zooC.schoolD.supermarket
小题2:
A.smallB.longC.shortD.big
小题3:
A.woreB.madeC.soldD.lent
小题4:
A.easyB.hardC.difficultD.lonely
小题5:
A.mustB.canC.can’tD.have to
小题6:
A.teacherB.policemanC.studentD.friend
小题7:
A.EveryoneB.The zookeeperC.NobodyD.Sandy’s mother
小题8:
A.and B.butC.orD.so
小题9:
A.every dayB.after schoolC.at the weekdaysD.at the weekends
小题10:
A.clothesB.glassesC.animalsD.fruit
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患者,男性55岁,有高血压史5年,此次发病表现为突然头痛,呕吐,意识障碍,伴有大小便失禁,偏瘫,测血压为185/110mmHg,左侧肌力0级。

最有诊断价值的辅助检查是()

A.头颅CT

B.腰椎穿刺脑脊液检查

C.肌电图

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