用硫酸再生强酸阳树脂,采用二步法的再生特点是()。A.防止再生中CaSO4沉淀析出

题型:多项选择题

问题:

用硫酸再生强酸阳树脂,采用二步法的再生特点是()。

A.防止再生中CaSO4沉淀析出

B.提高再生后工作交换容量

C.操作复杂

D.再生操作时间长

考点:化学水处理工化学水处理工(高级)化学水处理工(高级)题库
题型:多项选择题

患者女,66岁。反复上腹痛10年余,加重4个月,伴乏力。查体:结膜苍白,上腹部轻压痛。下列检查中,对明确诊断及指导治疗最有价值的是()

A.X线上消化道造影

B.胃镜及活检

C.腹部B型超声

D.腹部CT

E.MRI

题型:多项选择题

阅读理解。

     A small town in southwest Britain is banning (禁止) plastic bags in an attempt to help the environment

and cut waste-a step that environmentalists believe is a first for Europe.

      Shopkeepers in Mod bury population 1,500, agreed to stop handing out disposable plastic bags to

customers on Saturday. They said paper sacks and cloth carrier bags would be offered instead.

     Last month, San Franciso became the first U.S. city to ban plastic grocery bags. Internationally, laws

to discourage the use of plastic bags have been passed in parts of South Africa and Ireland, where

governments either tax shoppers who use them or fine companies that hand them out. Bangladesh already

bans them, and so do at least 30 remote Alaskan villages.

     Mod bury, about 225 miles southwest of London, has also declared a bag ammesty (宽限期), allowing

local people to hand in plastic bags that have piled up at home. They will be sent for a recveling. The Mod

bury ban was the idea of Rebecca Hosking, who saw the effect of bags on manne life while working in the

Pacific as a wildlife camerawoman. She said response (反应) in the town so far had been "really positive".

      "Mod bury is quite an old-fashioned town and a lot of people have wicker baskets to go out shopping

anyway," Hosking told Sky News Television.

    The World watch Institute, an environmental research agency, states that 100 billion plastic bags are

thrown away each year in the United States alone. More than 500 billion are used yearly around the world.

1. What was Rebecca Hosking?

A. A lawyer.

B. An environmentalist.

C. A sailor.

D. A photographer.

2. The underlined word "disposable" in the passage probably means _____.

A. acceptable

B. valuable

C. throw-away

D. long-lasting

3. It can be inferred from the passage that _____.

A. most of the people in Mod bury continue to use plastic bags

B. fewer and fewer plastic bags will be used in the world.

C. San Francisco is the first city to ban plastic bags in the world

D. most countries in the world have passed laws to ban plastic bags

4.Which of the following would be the best title of the passage?

A. Environmental Protection

B. Big Cities Banning Plastic Bags

C. Effect of Plastic Fags on Sea Animals

D. British Town Banning Plastic Bags

题型:多项选择题

关于ADIRU测试的说法错误的是()

A.ADIRU的测试代码含义在MCDU里面可以查到

B.起始ADIRU测试可以通过MSU

C.起始ADIRU测试可以通过FMSBITE

D.ADIRU的测试结果必须要通过AMM来对照

题型:多项选择题

蛋白质二级结构是指分子中

A.氨基酸的排列顺序

B.每一氨基酸侧链的空间构象

C.局部主链的空间构象

D.亚基间相对的空间位置

E.每一原子的相对空间位置

题型:多项选择题

每位同学每月免费使用电多少度?()

A、5度

B、6度

C、8度

D、9度

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