第二汽提塔塔顶放空尾气中乙烯基乙炔安全技术规定分压小于()。A.0.03MPa B.

题型:单项选择题

问题:

第二汽提塔塔顶放空尾气中乙烯基乙炔安全技术规定分压小于()。

A.0.03MPa

B.0.05MPa

C.0.075MPa

D.0.10MPa

考点:丁二烯装置操作工丁二烯装置操作工题库
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已知在等腰△ABC中,其周长为30cm,底边为y(cm),腰长为x(cm),(1)求y与x之间的函数关系式;(2)x的值能等于6cm吗?为什么?

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如图,是常用的实验室制取气体的发生装置.据图回答下列相关问题.

(1)写出图中A、B仪器的名称:A______,B______.

(2)制取O2时,A中应放______,其作用是______.

(3)制取CO2时,发生的化学方程式为:______.

(4)该装置还能用于制取的气体是______.

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钢筋表面的除锈方法主要有手工、动力工具、干喷射除锈及化学除锈几种。

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If you’ve ever seen a James Bond movie you’ll know that the hero gets around in a smart Aston Martin car. Even if you know full well that you could never afford such an expensive vehicle, you don’t forget the name, or the car. Why? You have been subjected to product placement.

Companies pay for a film to place their products in the movie. Product placement took off in the West in the 1980s and is now catching on in China. Two Hunan Satellite TV series are recent examples:Ugly Wudi and Let’s Go Watch the Meteror Shower(《一起去看流星雨》). Shampoo, mobile phones, cars— anything can be product-placed. Advertisers value the great appeal (吸引力) of the movies, knowing that a successful film can showcase their goods to hundreds of thousands of viewers. But when product placement takes over, artistic value can take a back seat.

Cai Zhiyong has been product-placing for years. The Beijing-based advertiser admits there is a conflict between art and business. He explains cash-strapped filmmakers often have to sacrifice (牺牲) the quality of their work because they need money from advertisers. In the original story for Meteor Shower, the heroine’s mother owned an ice cream shop. But no ice cream company wanted to give away money to the film. For this reason, the story was changed. In the film the man drinks 20 cups of milk tea where it was originally intended that he would eat ice cream.

Even here incredible, you may see the power of business over the movies, since the flim was perhaps written so that a product could be placed— whether it was ice cream or milk tea.

James Bond movies are mentioned in the first paragraph to show _________.

A. how popular James Bond is      B. how great the Aston Martin car is

C. how to make a movie more artistic   D. how well product placement works

Product placement can have a bad effect on the _________ of a movie.

A. sound effect            B. appeal       

C. commercial success         D. artistic value

What does the underlined word “cash-strapped” in Paragraph 6 probably mean?

A. Short of money.        B. Self-moneymaking

C. With a lot of cash.           D. Intending to earn money

We can learn from the example of Meteor Shower that __________.

A. business has a big say in the movie 

B. the original story was not good for a movie

C. filmmakers care more about making money.

D. milk tea companies are more successful than ice cream companies.

题型:单项选择题

学者张朋园提出“湖南人具有个性坚强、勇往直前、不计成败、不计利害的独特地区性格”。

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