题目内容
患者，男，35岁，因胸部外伤导致右侧气胸，经胸膜腔闭式引流后，护士收集到可拔管的信息是
查看答案
搜索结果不匹配？点我反馈
更多问题
(8)互补输出级应采用共集极或共漏极接法。( )
甲、乙均为国有企业，甲向乙购买一批货物，约定采用托收承付验货付款结算方式。2011年3月1日，乙办理完发货手续，发出货物；3月2日，乙到开户行办理托收手续；3月10日，铁路部门向甲发出提货通知；3月14日，甲向开户行表示承付，通知银行付款，则承付期的起算时间是（）。
Cell Phones:Hang Up or Keep Talking？
Millions of people areusing cell phones today. In many places it is actually considered unusualnot to use one. In many countries, cellphones are very popular with young people. They find that the phones are morethan a means of communication-having a mobile phone shows that they are cooland connected.
The explosions around theworld in mobile phone use make some health professionals worried. Some doctors are concerned that in the futuremany people may suffer health problems from the use of mobile phones. InEngland,there has been a seriousdebate about this issue. Mobile phone companies are worried about the negativepublicity of such ideas. They say that there is no proof that mobile phones arebad for your health.
On the other hand,why dosome medical studies show changes in the brain cells of some people whouse mobile phones？ Signs of change inthe tissues of the brain and:head can be detected with modern scanning(扫描)equipment In onecase,a traveling salesman had to retire at a young age because of seriousmemory loss. He couldn't remember evensimple tasks. He would often forget the name of his own son This man usedto talk on his mobile phone for aboutsix hours a day,every day of his working week,for a couple of years. His family do'ctor blamed his mobile phoneuse,but his employer's doctor didn't agree.
What is it that makes mobilephones potentially harmful？ The answer is radiation High-tech machines candetect very small amounts of radiation from mobile phones. Mobile phonecompanies agree that there is some radiation,but they 'say the amount is toosmall to worry about.
As the discussion abouttheir safety continues,it appears that it's best to use mobile phones less often. Use your regular phone if you want totalk for a long time. Use your mobile phone only when you really need it. Mobile phones can be veryuseful and convenient,especiaIIY in emergencies. In the future,mobile phones may have a warning labelthat says they are bad for your health. So for now,it's .wise not to use yourmobile phone too often.
People buy cell phones for the following reasons EXCEPT that
取得乙级政府采购代理资格的代理机构只能代理单项政府采购预算金额()万元以下的政府采购项目。
微信支付 
支付宝支付