2009年,英国《自然》杂志发表了一篇题为《用铝铍同位素比值(26Al/10Be

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2009年,英国《自然》杂志发表了一篇题为《用铝铍同位素比值(26Al/10Be)埋藏方法测定周口店直立人的年代》(下图)的文章,这篇文章宣称周口店直立人的生活年代应为距今77万年前。杂志中提到的“周口店直立人”指的是

[ ]

A.元谋人

B.北京人

C.蓝田人

D.山顶洞人

考点:北京人
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明确清扫基准,必须包括的相关要求有哪些?

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在地震区,用灰土作承重墙体的房屋,当设防烈度为7度时,最多宜建几层

A.不允许
B.单层
C.二层
D.二层,但总高度不应超过6m

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患者女,40岁。已婚,工人。10个月前行诊断性刮宫,术后有 * * 出血。当听到同事说有癌症的可能时,感到心慌、胸闷、气促。之后反复出现紧张、烦躁、怕风、怕死,间歇期逐渐缩短。家族史、既往史、体检、实验室检查无明显异常。病前性格多疑、易急躁。自知力存在。该患者最可能的诊断是()

A.神经衰弱症

B.焦虑症

C.恐惧症

D.疑病症

E.心因性精神障碍

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犯罪嫌疑人在(),可以聘请律师为其提供法律帮助。

A、被侦查机关第一次讯问后

B、被取得保候审之日起

C、被逮捕之日起

D、被收容审查之日起

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Melissa and LoveLetter made use of the trust that exists between friends or colleagues. Imagine receiving an (6) from a friend who asks you to open it. This is what happens with Melissa and several other similar email (7) . Upon running, such worms usually proceed to send themselves out to email addresses from the victim’s address book, previous emails, web pages (8) .

A. namesB. cookies C. software D. extensions

As administrators seek to block dangerous email attachments through the recognition of well-known (9) , 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 (10) access to your network.

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