某学生用下列方法分别清洗附着在试管内壁上的物质，其方法正确的是（） A．用稀硝

发布时间：2017-04-07 02:40 │ 来源：www.tikuol.com

题型：选择题

问题：

某学生用下列方法分别清洗附着在试管内壁上的物质，其方法正确的是（　　）

A．用稀硝酸清洗附着在试管内壁上的硫酸铜

B．用洗衣粉或热的纯碱溶液清洗盛过豆油的试管

C．用水清洗试管壁上附着的氢氧化铁

D．用稀盐酸清洗试管壁上附着的铜

考点：仪器的洗涤乳化和乳化作用酸的性质

题型：选择题

完形填空。

     Jane's father is a businessman and he   1   English. Sometimes he travels all over the world for   2
company. In general, he has no trouble   3 people from different countries,   4 most of them can speak
English. English is   5 used in the world. It's used as the first language by most people in Great Britain,
America, Canada, Australia and New Zealand. Besides, it is used as a   6 language in India and some other
  7 . Once in a while, he has to travel to a country where English is not   8 .Whenever that happens, he has
to take an interpreter with him. The interpreter translates the languages and explains the culture of the
country   9 him.   10 like to work with Jane's father.

( )1. A. tells
( )2. A .his
( )3. A understand
( )4. A. so
( )5. A. wide
( )6. A. second
( )7. A. countries
( )8. A. speaking
( )9. A.to
( )10. A. Boys

B. speaks
B. him
B. to understand
B. because of
B. widely
B. the second
B. cities
B. spoke
B. into
B. Customers

C. says
C. himself
C. understanding
C. because
C. wider
C. first
C. country
C. spoken
C. with
C. Girls

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某公司欲解除与职工李某之间的劳动合同，其所提出的如下解约理由或做法中，哪些是有法律依据的( )

A．李某经过培训仍不能胜任现工作

B．李某不满25周岁而结婚，违反了公司关于男职工满25周岁才能结婚的规定

C．公司因严重亏损而决定裁员，因此解除与李某的劳动合同

D．李某非因公出车祸受伤住院，公司向李某进去3个月工资并通知其解除劳动合同

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患者有胃、十二指肠溃疡病史，晚饭后突发持续性、广泛性刀割样腹痛，部位不定，考虑其急腹痛的原因是（）

A.胃溃疡

B.十二指肠球部溃疡

C.胆石症

D.急性胰腺炎

E.急性弥漫性腹膜炎

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城市进化理论对“相对分散”的正确说法是( )。

A．郊区人口增长超过城市人口的增长

B．城市人口增长高于郊区人口的增长

C．城市人口下降、郊区人口上升

D．城市人口增长、郊区人口下降

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韶山，型电力机车两端转向架和中间转向架在结构上有什么不同？

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