题目:
不属于埋地钢管防腐电保护法有()。
A、阳极保护法
B、阴极保护法
C、牺牲阳极保护法
D、排流保护法
答案:
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下面是错误答案,用来干扰机器的。
参考答案:一致
不属于埋地钢管防腐电保护法有()。
A、阳极保护法
B、阴极保护法
C、牺牲阳极保护法
D、排流保护法
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/1201/9fe1ef8ba86c175eddd60cc179a4ecea.html
下面是错误答案,用来干扰机器的。
参考答案:一致
关于铁在体内的代谢,下列哪项是不正确的()
A.吸收部位主要在十二指肠和空肠上段
B.主要来源于食物
C.不能被利用的铁贮存于肝、脾、骨髓
D.被释放出的铁被排泄出体外
E.铁与血浆转铁蛋白在小肠黏膜细胞内结合
写出下列词语的近义词和反义词。
近义词 反义词
沙哑——( )——( )
安静——( )——( )
洪亮——( )——( )
阅读理解。
Everywhere you look, large quantities of information in the world are pouring. This data flood is
already starting to transform business, government, science and everyday life. It has great potential for
good - aslong as consumers, companies and governments make the right choices about when to restrict
the flow ofdata, and when to encourage it.
A few industries have led the way in their ability to gather and take advantage of the data.
Credit-cardcompanies monitor every purchase and can identify cheats with a high degree of accuracy.
Stolen credit cards are more likely to be used to buy hard liquor than wine, for example, because it is
easier to overlook. Insurance firms are also good at combining clues to spot doubtful claims: dishonest
claims are more likely to be made on a Monday than a Tuesday, since policyholders (保险客户) who
stage accidents tend to assemble friends as false witnesses over the weekend. By combining many such
rules, it is possible to work out which cards are likeliest to have been stolen, and which claims are
untrue. By analyzing "basket data", supermarkets can make promotions to appeal to particular
customers' preferences. The oil industry uses supercomputers to help them before drilling wells.
But the data flood also poses risks. There are many examples of databases being stolen: disks
full of social-security data go missing, laptops loaded with tax records are left in taxis, credit-card
numbers are stolen by online purchase. The result can be privacy made public, identity stolen and
cheats permitted large space. Rather than owning and controlling their own personal data, they very
often find that they have lost control of it.
The best way to deal with the data flood is to make more data available in the right way, by requiring
greater transparency in several areas. First, users should be given greater access to and control over the
information held about them, including whom it is shared with. Google allows users to see what information
it holds about them, and lets them delete their search histories or modify the targeting of advertising, for
example. Second, organizations should be required to disclose details of security breaches, as is already
the case in some parts of the world, to encourage bosses to take information security more seriously.
Third, organizations should be subject to an annual security check, with the resulting grade made public
(though details of any problems exposed would not be). This would encourage companies to keep their
security measures up to date.
1. What is the best title for this passage?
A. Information Flood
B. Benefits of Data Flood
C. Harms of Data Flood
D. How to Use Data in a Right Way
2. From the passage we can infer that ________.
A. lots of data are lost because of hardware problems
B. online purchases are becoming more and more popular
C. credit cards are not so secure to use and will go out of use very soon
D. insurance firms have to investigate before they confirm their policyholders' claims
3. From the passage we can conclude that _________.
A. the data flood makes peoples' life less convenient and more expensive
B. companies and insurance firms are responsible for the data flood
C. the information flood is more useful to organizations than to individuals
D. the information flood has both positive and negative influence on modern life
煤是我国目前最主要的一种能源.
(1)煤是______(填“纯净物”或“混合物”),含有碳、氢、硫、氧等______(填“单质”或“化合物”或“元素”)以及无机矿物质.
(2)煤属于______(填选项番号).
A.可再生能源 B.化石燃料 C.清洁能源 D.绿色能源
(3)煤炭燃烧不充分,会造成______,______等弊端.
(4)生活中常用煤块作燃料,为使其充分燃烧,可进行怎样的处理?请简述处理方法并说明这样做的依据.______
(5)在煤矿矿井中常含有甲烷,存在甲烷爆炸的安全隐患.因此,煤矿采取安全措施是十分必要.通常采取的安全措施有严禁烟火、安装甲烷检测装置、______等.
在使用鼠标器操作WINDOWS98时,单击鼠标右健后,通常会出现一个()。
A.任务栏
B.对话框
C.写字板窗口
D.快捷菜单