[单选题]飞机在空中飞行时,在它的前后、左右、上下各方向等距离处测得的声压级是( )的. (A)相同 (B)不同 (C)无法判断 (D)前后相等,左右和上下不等
[判断题]神经纤维传导冲动时要消耗能量.
[单选题]下列选项在布卢姆认知领域六个层次的分类中没有提到的是( ).A. 分析B. 领会C. 评价D. 综合运用
[单选题]判断两个样本统计量是否存在实质性差异,主要借助于( )A. 总体参数估计B. 假设检验C. 方差分析D. 回归分析
[多选题]形式主义的商法典有以下哪些形式( ).A.以商人为中心的主观主义原则作为立法基础而构造的商法典B.以商行为为中心的客观主义原则作为立法基础而构造的商法典C.以商人和商行为共存的折衷主义原则作为立法基础而构造的商法典D.调整商事法律关系的法律规范汇编
[单选题]在维修三相异步电动机定子绕组时,将每相绕组的匝数做了适当增加,气隙中的每极磁通将( ) A、 增加 B、 减小 C、 保持不变 D、 不一定
[问答题]简述客户对企业的价值.
[多选题]下列选项中,属于唯物辩证法基本规律的有( ). A、 质量互变规律 B、 对立统一规律 C、 否定之否定规律 D、 联系发展规律 E、 因果作用规律
[单选题]《蜀相》的体裁是( ) A.五言古诗 B.七言古诗 C.七言律诗 D.七言绝句
[多选题]19九大提出,引导应对气候变化国际合作,成为全球生态文明建设的重要____、____、____.A.参与者B.贡献者C.引领者D.领导者
[单选题]Google, the Internet search-engine company, has announced it will give more than twenty-five million dollars in money and investments to help the poor. The company says the effort involves using the power of information and technology to help people improve their lives.Aleem Walji works for Google.org -- the part of the company that gives money to good causes. He said the company’s first project will help identify where infectious (传染性的) diseases are developing. In Southeast Asia and Africa, for example, Google.org will work with partners to strengthen early-warning systems and take action against growing health threats.Google.org’s second project will invest in ways to help small and medium-sized businesses grow. Walji says microfinance (小额信贷) is generally small, short-term loans that create few jobs. Instead, he says Google.org wants to develop ways to bring investors and business owners together to create jobs and improve economic growth.Google.org willalso give money to help two climate-change programs announced earlier this year. One of these programs studies ways to make renewable (再生的) energy less costly than coal-based energy. The other is examining the efforts being made to increase the use of electric cars.The creators of Google have promised to give Google.org about one percent of company profits and one percent of its total stock value every year. Aleem Walji says this amount may increase in the future.1、The purpose of Google’s investments is to ________.A)help poor peopleB)develop new technologyC)expand its own businessD)increase the power of information
[单选题]人类MHC.因位于第几对染色体上( )A.第1对B.第6 对C.第9对D.第12 对E.第19 对
[判断题]完全竞争市场,厂商是价格的接受者,但消费者不是.( )
[判断题]计算斜拉桥内力时,应计入其拉索的垂直效应.( )
[填空题]根据物是否能移动并且移动是否损害其价值为标隹,物可分为( )
[单选题]在软件生命周期中,能准确地确定软件系统必须做什么和必须具备哪些功能的阶段是______. A.概要设计 B.详细设计 C.可行性分析 D.需求分析
[单选题]肝硬化病人出现肝掌、蜘蛛痣的机制是( )A.体内雌激素增多 B.体内醛固酮增多 C.侧枝循环建立 D.门静脉高压 E.肝脏合成能力减弱
[填空题]下列不是C++基本数据类型的是( )
[单选题]下列说法不正确的是( ) A.给水处理中消毒这一步必不可少 B.饮用水合格标准是大肠菌群数<3个/L C. HOCl氧化能力比OCl-强 D.HOCl、OCl-中的含氯量称化合性氯
[单选题]Most people still send their letters and resumes through ________.A)e-mailB)the InternetC)the on-line serviced.D)traditional mail
[单选题]关于自然降解,下列说法不正确的是( ) A.有机物降解时耗氧速率与此时有机物含量成正比 B.大气复氧时复氧速率与此时溶解氧含量成正比 C.耗氧速率常数、复氧速率常数都 可用kt=k20×1.047T-20计算 D.亏氧量变化速率是耗氧速率与复氧速率的代数和