中央信号背投(或模拟表示屏)的主要功能是什么?

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问题:

中央信号背投(或模拟表示屏)的主要功能是什么?

考点:地铁信号检修工地铁信号检修工题库
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已知点A(2,2),B(5,-2),点P在x轴上且∠APB为直角,则点P的坐标是______.

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Gondon征操作方法为()。

A.用竹签在外踝下方足背外缘,由后向前划至跖趾关节处

B.用竹签沿患者足底外侧缘,由后向前划至小趾跟部并转向内侧

C.用拇指及示指沿患者胫骨前缘用力由上向下滑压

D.用手以一定力量捏压腓肠肌

E.将手置于患者足外侧两趾背面,向跖面按压后突然放松

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关于药物氧化降解反应的错误说法()

A.氧化降解反应速度与温度无关

B.维生素C的氧化降解仅与pH值有关

C.金属离子可催化氧化反应

D.含有酚羟基结构的药物不易氧化降解

E.药物的氧化反应可以防止

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新华社发布的中 * * 、国务院《关于进一步加强新时期信访工作的意见》指出,要进一步畅通信访渠道,依法规范信访秩序。要完善信访诉求表达方式,充分尊重和保护人民群众的信访权利,对群众来访要坚持文明热情接待,对群众来信要认真负责办理,坚决纠正限制和干涉群众正常信访活动的错误做法,确保信访渠道畅通。《意见》还指出,对信访活动中少数人违反有关法律法规,损害国家、社会、集体利益和其他.会民合法权益的行为,要依法严肃处理。

上述规定对公民的政治参与有何启示?(10分)

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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. crackerB. user C. customer D. client

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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