对于F-1型浮阀、浮阀塔的操作性能以浮阀正处于()的状态下为好。

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问题:

对于F-1型浮阀、浮阀塔的操作性能以浮阀正处于()的状态下为好。

考点:气体分馏装置操作工中级气体分馏装置操作工中级气体分馏装置操作工题库
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女,62岁,戴全口义齿一周,休息状态时义齿固位好,但说话和大张口时义齿容易脱落

正确的处理方法是()

A.加长基托边缘

B.磨薄基托边缘

C.缓冲系带处基托

D.调至平衡抬

E.磨除过长基托边缘

题型:填空题

2007年诺贝尔化学奖授予德国化学家Gerhard Ertl,以表彰他对固体表面化学研究过程中的重大发现。使CO、NOx等在铂表面发生化学反应转变成无毒气体,以减少汽车尾气中有毒气体的排放,正是此项研究的重要应用之一。下列有关说法不正确的是 [ ]

A.NOx在铂表面发生氧化反应生成N2

B.CO在铂表面发生反应时起还原剂作用

C.铂在反应中起催化作用

D.NO、CO均能与人体中的血红蛋白结合

题型:填空题

China’s Ministry of Culture has recommended 10 cyber games(网络游戏) that are suitable for minors to play as part of its drive to purify the on-line environment for the young.

The 10 cyber games were selected by the ministry’s on-line games censorship committee from scores of games recommended by the Chinese public.l

The games are all domestic products. They include five role playing games (RPG), four recreation and chess games, and one educational game, such as “Warring States Ⅱ Online,” “Rainbow Island Online,” and “Wonderlands of learning and games.”

These games have made their way into the final recommendation list because they are considered “healthy” and can “enhance intelligence,” according to the ministry.

The ministry hoped the list could serve a a guidance for parents to better direct their children in the winter vacation, which usually lasts nearly two months from January to February each year.

This was the third time for the ministry to publish recommended cyber games list. The previous two were made public respectively in January 2006 and August 2005 with a total of 25 games inlisted.

In the past few years, on- line games have become the favorite pastime of young people. However, it is argued that such social problems as game addiction, juvenile delinquency (青少年犯罪) and perversion among minors by on-line violence and pornography (色情) have come from an inadequately regulated Internet.

About 9.72 percent of Chinese netizens between the ages of 13 and 30 suffer Internet addiction, said a report issued last month by the China Youth Association for Network Development (CYAND).

According to the China Internet Network Information Center (CINIC), the main Internet watchdog, China had 210million Internet users at the end of 2007 and its online population is on course to become the world’s largest at the beginning of this year.

Net users between 18 and 30 accounted for 49.9percent of the total users. Although the CINIC did not give the figure of those below 18, teenagers and youths have obviously taken up more than half of the total number of net users. And the number of users under age 18 increased rapidly last year, the CINIC noted.

小题1:What do you know about the 10cyber games ?

A.They are expected to help parents to better direct their children in the summer vacation.

B.They include five RPG, forty chess games and one educational game.

C.They are suitable for teenagers.

D.They are all foreign products.小题2:According to the passage, how many teenagers and youths become net users at the end of 2007?

A.Mor than 105 million.

B.Less than 105 million.

C.About 210 million.

D.104.79 million.小题3:What can be inferred from the passage?

A.A lot of Chinese netizens suffer Internet addition.

B.On-line games can cause a lot of social problems such as game addition, juvenile delinquency.

C.Parents sometimes have trouble in directing their children about on-line games.

D.The ministry has recommended 25 games till now.小题4:What’s the best title of the passage?

A.How to purify the on-line environment for the young.

B.10 “suitable” cyber games for teenagers.

C.The disadvantages of cyber games.

D.Chinese authority lists 10 “suitable” E-games for teenagers.

题型:填空题

我国关税法律法规中,目前原产地规定采用()。

A.全部产地生产标准

B.参与性加工标准

C.实质性加工标准

D.挂靠性加工标准

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电流互感器有哪几种接线方式?

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