试题与答案

衣服和装饰是同时出现的。

题型:判断题

题目:

衣服和装饰是同时出现的。

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/1031/22e5a8beb8fa08f96e893cce6ec98e7e.html

下面是错误答案,用来干扰机器的。

参考答案:每日时间

试题推荐
题型:填空题

食品防腐方法的研究

   夏天,煮沸的肉汤很快就会腐败变质。科学家推测,变质的肉汤里面可能生出了无数的细菌。那么,这些细菌是从哪里来的呢?对此,法国生物学家巴斯德(1822年-1895年)进行了认真的研究。他把新鲜、清澈的肉汤装入一个玻璃瓶里,然后把瓶颈烧软并拉成鹅颈的形状。随后,他再次煮沸瓶里的肉汤。这样,尽管肉汤通过弯曲的瓶颈与外界相通,但是4年过去了,静置的肉汤仍然新鲜如初。怎样解释这一切呢?巴斯德认为,纯净的肉汤是永远不会生出细菌的。问题是出在空气上,空气中飘浮着细菌和芽孢,它们飘落到肉汤里,才使肉汤腐败变质了。

   鹅颈瓶里的肉汤之所以长久不腐败,就是因为空气中的细菌和芽孢不能进入肉汤的缘故。为了证实自己的看法,巴斯德轻轻地摇动静置了4年的鹅颈瓶。不久,瓶内的肉汤果然腐败了。人们还根据巴斯德的实验结果,研究出了食品长期防腐的办法,这就是现在普遍生产的各种罐头食品。

根据以上材料,分析回答:

(1)食物腐败变质的原因是_________。

(2)食品要长期防腐必须防止食品被_________感染。

(3)科学研究的基本方法包括:_________、_________和_________、_________、_________等,上述材料中巴斯德的研究工作主要是:_________法。

(4)分析材料可以看出,实验法应当有5个步骤:①._________②._________③._________④._________⑤._________

查看答案
题型:单项选择题

Melissa and LoveLetter made use of the trust that exists between friends or colleagues. Imagine receiving an (71) from a friend who asks you to open it. This is what happens with Melissa and several other similar email (72) . Upon running, such worms usually proceed to send themselves out to email addresses from the victim’s address book, previous emails, web pages (73) .
As administrators seek to block dangerous email attachments through the recognition of well-known (74) , virus writers use other extensions to circumvent such protection. Executable (.exe) files are renamed to .bat and .cmd plus a whole list of other extensions and will still run and successfully infect target users.
Frequently, hackers try to penetrate networks by sending an attachment that looks like a flash movie, which, while displaying some cute animation, simultaneously runs commands in the background to steal your passwords and give the (75) access to your network.

A.attachment

B.packet

C.datagram

D.message

查看答案
微信公众账号搜索答案