分析煤样的粒度应是()A.

题型:单项选择题

问题:

分析煤样的粒度应是()

A.<0.1mm

B.<0.2mm

C.<0.5mm

D.<1mm

考点:采制样工考试采制样工考试题库
题型:单项选择题

发生频率与说明书描述不一致的药品不良反应,按照()

A.药品不良反应报告与监测

B.新的药品不良反应

C.药品群体不良反应

D.严重不良反应

E.新的严重药品不良反应

题型:单项选择题

某同学取一片洗净晾干的鸡蛋壳(主要成分为碳酸钙,不考虑其他杂质参加反应),放在酒精喷灯火焰上灼烧一段时间后,放置冷却.他设计了下列实验方案探究鸡蛋壳灼烧后残留固体的组成,请你帮他完成下表中实验探究的相关内容.

残留固体的成分探究步骤可能观察到

的现象

结论及化学反应方程式
(1)可能有氧化钙取残留固体加水溶解,过滤,向滤液中滴加几滴无色酚酞试液现象:______结论:有氧化钙______
化学方程式:

______

(2)还可能有碳酸钙另取残留固体滴加足量盐酸现象:固体溶解并有气泡产生结论:______
化学方程式:______

题型:单项选择题

计算题:已知某地区非金融企业部门增加值总计68。亿元,支付劳动报酬256亿元,上缴生产税85亿元,从政府获得生产补贴6亿元,支付银行利息等财产收人42亿元,获得国债利息、红利等财产收入38亿元,用于职工生活困难补助支出7亿元,支援灾区捐款3亿元,上缴所得税43亿元。

试根据所给资料计算该地区非金融企业部门的总营业盈余、原始收入总额和可支配总收入。

题型:单项选择题

列控中心单系有工作、同步两种状态

题型:单项选择题

Astronaut Jim Voss has enjoyed many memorable moments in his career, including three space flights and one space walk. But he recalls with special fondness a decidedly earthbound experience in the summer of 1980, when he participated in the NASA-AS-EE Summer Faculty Fellowship Program. Voss, then a science teacher at West Point, was assigned to the Marshall Space Flight Center’s propulsion lab in Alabama to analyze why a hydraulic fuel pump seal on the space shuttle was working so well when previous seals had failed. It was a seemingly tiny problem among the vast complexities of running the space program. Yet it was important to NASA because any crack in the seals could have led to destructive results for the astronauts who relied on them.

"I worked a bit with NASA engineers," says Voss, "but I did it mostly by analysis. I used a handheld calculator, not a computer, to do a thermodynamic analysis. "At the end of the summer, he, like the other NASA-ASEE fellows working at Marshall, summarized his findings in a formal presentation and detailed paper. It was a valuable moment for Voss because the ASEE program gave him added understanding of NASA, deepened his desire to fly in space, and intensified his application for astronaut status.

It was not an easy process. Voss was actually passed over when he first applied for the astronaut program in 1978. Over the next nine years he reapplied repeatedly, and was finally accepted in 1987. Since then he has participated in three space missions. The 50-year-old Army officer, who lives in Houston, is now in training for a four-month mission as a crew member on the International Space Station starting in July 2000.

Voss says the ASEE program is wonderful for all involved. "It brings in people from the academic world and gives NASA a special property for a particular period of time. It brings some fresh eyes and fresh ideas to NASA, and establishes link with our colleges and universities," Voss explains. "There’s an exchange of information and an exchange of perspectives that is very important."

For the academic side, Voss says, the ASEE program also "brings institutions of higher learning more insight into new technology. We give them an opportunity to work on real-world problems and take it back to the classroom. \

Which of the following is NOT TRUE according to what Voss said on the ASEE program ?()

A. Fresh members from the academic world participate in the program.

B. The program brings new outlooks to NASA space programs.

C. It is important for the space scientists to exchange information and perspectives.

D. American colleges and universities are a special property of NASA

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