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题目：
未知类型
A . 氢气、氮气
B . 氢气、空气
C . 空气、氮气
D . 空气、氩气
答案：
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φ10f7、φ10f8分别与φ10H8配合，它们的最小间隙值相等。（ ）
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11月5日早晨8：00，某区烟草专卖局专卖科召开全体执法人员参加的晨会，稽查二中队长在部署当日的检查计划时指出，为了掌握市场情况，打击违法行为，维护卷烟市场正常经营秩序，当日的主要检查内容：一是普遍检查零售许可证的使用情况；二是抽查送货小票，看卷烟配送有没有送货到位；三是查看有无违法经营情况；四是对上次检查中发现的违规经营户要重点进行检查，并做好宣传教育工作。该日检查计划还明确，检查人员张某（负责人）、孟某主要负责A村（零售户A1、A2、A3）、B村（零售户B1、B2）、C村（零售户C1、C2、C3）、D村（零售户D1、D2）、E村（零售户E1、E2、E3、E4、E5、E6、E7、E8、E9），F村（零售户F1），计6个村20户以及周边市场的检查。张某、孟某在检查中发现，F1店内的10条软中华牌卷烟的条形码是外区某卷烟零售户的；此外，张某、孟某还收集到其他信息10余条并进行了充分应用。
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土壤背景采样点离铁路、公路至少（）m以上。
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Announcement from China ABC Tender Corporation Dear Sirs/Madam, In accordance with the Loan Agreement between Chinese Government and the Asian Development Bank (ADB) for "The Construction of a New Harbor Project in Shandong", China ABC Corporation Shandong Branch now invites bids from eligible suppliers from member countries of ADB for "the Construction of a New Harbor" in Shandong, to be financed with the proceeds of ADB. All those who are willing to participate in the bid are kindly requested to contact our office at 60 Yan'an Road, Qingdao, Shandong, tel86-532-6168217 , fax 86-532-6168218 to obtain bidding document between 9: 00 a.m．and 11: 00 a．m．(Sundays and holidays excepted)from Oct．25, 2008 to Dec．25, 2008 upon nonrefundable payment of RMB 500 while express mail postage RMB 50 shall be added. Bids shall reach ABC Corporation before 5: 00 a.m．Jan．1, 2009 (local time)．Bids will be opened in public at 10: 00 a.m．on Jan．18th, 2009(local time) in China ABC Corporation．Bids received after that date and time or not accompanied by a Bid Bond USD ＄1200 as required in the bidding document will not be accepted. Yours truly, Bids will be opened in Rm．A0408 at the address below: China ABC Corporation Shandong Branch Hui Bin Office Building, No．60 Yanan Road Qingdao, Shandong, China P．O．Box: 9802 Post code: 100101 Telex: 22655 CPCCI CN Tel: 4916649, 4916650 Fax: 4216612
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系统性硬化症的内脏损害有哪些？
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黄胸鼠主要识别特征之一是（）
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工业企业成本核算的内容是（）。
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贝雷迪认为，真正的比较研究开始于（）
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含碳量高于2.0%的铁碳合金叫做碳素钢。
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检测蛋白用可见光分光光度计，波长用（）。