{{B}}Plugging into
Electronic Databases{{/B}} If you are looking{{U}} (36) {{/U}}information, library shelves are a good place{{U}} (37) {{/U}}. But if you need up-to-the-minute data or have specialized needs, you may{{U}} (38) {{/U}}a computerized database more useful,{{U}} (39) {{/U}}expensive, and less time consuming. A database, a file of{{U}} (40) {{/U}}on one subject or family of subjects, can be{{U}} (41) {{/U}}and maintained in a computer’s memory. The speed of the computer then enables you{{U}} (42) {{/U}}any item in this file almost instantly. The three main types of databases are statistics, bibliographies, and full text. Statistical databases store vast{{U}} (43) {{/U}}of numerical data, such as wage and price indexes, census A. that B. where C. which D. when [单选题]《高速铁路接触网安全工作规则》(铁总运[2014]221号),绳子(尼龙、棕、麻绳)试验负荷()。
A.0.5PH B.1PH C.1.5PH D.2PH [单项选择]应当严格掌握用药指证,经抗菌药物管理工作组指定的专业技术人员会诊同意后,由具有相应处方权医师开具处方的是
A. 非限制使用级抗菌药物 B. 限制使用级抗菌药物 C. 特殊非限制使用级抗菌药物 D. 特殊限制使用级抗菌药物 E. 特殊使用级抗菌药物 根据《抗菌药物临床应用管理办法》 [单项选择]既能泻下逐水,又能消肿散结的药物是()
A. 巴豆 B. 芫花 C. 牵牛子 D. 商陆 [单选题]当发现有再次爆炸危险时,必须( );进入灾区行动要谨慎,防止碰撞产生火花,引起爆炸;经侦察确认或者分析认定人员已经遇难,并且没有火源时,必须先恢复灾区通风,再进行处理。
A.立即撤离至安全地点 B.进入探查 C.撤出灾区 [判断题]断轨临时处理或紧急处理时,应先在断缝两侧轨头非工作边做出标记,标记间距离约为6m。( )
A.正确 B.错误 [填空题]设备修理的类别可按修理工作量的大小分为:小修、( )和( )。
[多选题]关于我国利率市场化改革路径的说法,正确的有()
A.先放开货币市场利率和债券市场利率,再放开存、贷款利率 B.先放开外币利率,再放开本币利率 C.先放开贷款利率,再放开存款利率 D.先放开小额利率,再放开大额利率 E.先放开个人贷款利率,再放开企业贷款利率 [单选题]交流电通过单相整流电路后,得到的输出电压是()
A.交流电压 B.稳定的直流电压 C.脉动直流电压 D.不稳定的交流电压 [判断题] ( )劳动合同分为固定期限劳动合同、无固定期限劳动合同和以完成一定工作任务为期限的劳动合同。
A.正确 B.错误 [单项选择]不分散聚合物钻井液动塑比为0.48左右目的是保证()。
A. 低返速携砂 B. 高返速携砂 C. 高塑性粘度 D. 都不是 [单选题]超高压锅炉参数停炉熄火时,主汽压力不得低于( )。
A.8 MPa B.10 MPa C.12 MPa D.16 MPa [单选题]在延续进路的终端处设有列车或调车信号按钮时,它们可作为延续进路终端按钮使用。
A.对 B.错 [单项选择]
Baekeland and Hartmann report that the "short sleepers" had been more or less average in their sleep needs until the men were in their teens. But at about age 15 or so, the men voluntarily began cutting down their nightly sleep time because of pressures from school, work, and other activities. These men tended to view their nightly periods of unconsciousness as bothersome interruptions in their daily routines. [多选题]加热器停用后应关闭()阀。
A.加热器跨线 B.加热器入口 C.加热器出口 D.回水管线低点 [单选题](7852)轻柴油应具有良好的低温性能和( ),无水分和杂质。(1.0分)
A.安全性 B.经济性 C.可靠性 D.燃烧性 我来回答: 提交
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