吸收是根据气体混合物中各组分在某种溶剂中()的不同而进行分离的。A、浓度 B、百分比

题型:单项选择题

问题:

吸收是根据气体混合物中各组分在某种溶剂中()的不同而进行分离的。

A、浓度

B、百分比浓度

C、溶解度

D、温度

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题型:单项选择题

全球性生态环境问题越来越引起人们的关注,它关系到人类的生存与可持续发展。下列选项中,不属于全球性生态环境问题的是[ ]

A.金融危机

B.土地荒漠化

C.温室效应

D.水资源短缺

题型:单项选择题

阅读下面材料,在空白处填入适当的内容(1个单词)或括号内单词的正确形式。    

Chengdu has dozens of new millionaires, Asia’s biggest building, and fancy new hotels. But for tourists like me, pandas are its top(61)(attract).

So it was a great honour to be invited backstage at the not-for-profit Panda Base, where ticket money helps pay for research, I(62)(arrow)to get up close to these cute animals at the 600-acre centre. From tomorrow, I will be their UK ambassador. The title will be(63)(official) given to me at a ceremony in London.But my connection with pandas goes back (64)my days on a TV show in the mid-1980s,(65)I was the first Western TV reporter(66)(permit) to film a special unit caring for pandas rescued from starvation in the wild. My ambassadorial duties will include(67)(introduce) British visitors to the 120-plus pandas at Chengdu and others at a research in the misty mountains of Bifengxia.

On mu recent visit, I help a lively three-month-old twin that had been rejected by(68)(it) mother. The nursery team switches him every few(69)(day) with his sister so that while one is being bottle-fed,(70)other is with mum-she never suspects.

65()

题型:单项选择题

在代收代付业务中,代收付指令的委托方是().

A.机构

B.账户

C.银行

D.个人

题型:单项选择题

间质性水肿的主要受累部位为:

A.脑灰质

B.脑灰白质

C.脑白质

D.脑室旁

E.脉络丛

题型:单项选择题

选题的一般原则有()

A.科学性原则

B.创造性原则

C.需要性原则

D.可行性原则

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