下图是观察血涂片时视野的一部分,据图回答问题(3分) (1)有促进止血加速凝血

题型:实验题

问题:

下图是观察血涂片时视野的一部分,据图回答问题(3分)

(1)有促进止血加速凝血作用的是【 】__________。(2)患急性炎症时数目增多的是【 】__________。(3)输送氧的是【 】_________

考点:血液的组成和功能观察实验:观察人血的永久涂片观察实验:观察小鱼尾鳍内血液的流动
题型:实验题

简述悬索桥的结构组成、传力途径及受力特点。

题型:实验题

“大黄鸭”来到中国,下列能正确表示“大黄鸭”在水中所成倒影的是(  )

  

题型:实验题

Modern inventions have speeded up people’s lives amazingly. Motor-cars cover a hundred miles in little more than an hour, aircraft cross the world inside a day, while computers operate at lightning speed. Indeed, this love of speed seems never-ending. Every year motor-cars are produced which go even faster and each new computer boasts (吹嘘) of saving precious seconds in handling tasks.

All this saves time, but at a price. When we lose or gain half a day in speeding across the world in an airplane, our bodies tell us so. We get the uncomfortable feeling known as jet-lag; our bodies feel that they have been left behind in another time zone. Again, spending too long at computer results in painful wrists and fingers. Mobile phones also have their dangers, according to some scientists; too much use may transmit harmful radiation into our brains, a consequence we do not like to think about.

However, what do we do with the time we have saved? Certainly not relax, or so it seems. We are so accustomed to constant activity that we find it difficult to sit and do nothing, or even just one thing at a time. Perhaps the days are long gone when we might listen quietly to a story on the radio, letting imagination take us into another world.

There was a time when some people’s lives were devoted simply to the cultivation of the land or the care of cattle. No multi-tasking there; their lives went on at a much gentler pace, and in a familiar pattern. There is much that we might envy about a way of life like this. Yet before we do so, we must think of the hard tasks our ancestors faced: they farmed with bare hands, often lived close to hunger, and had to fashion tools from wood and stone. Modern machinery has freed people from that primitive existence.

小题1: The new products become more and more time-saving because       .

A.the manufacturers boast a lot

B.time is limited

C.the prices are increasingly high

D.our love of speed seems never-ending小题2: What does “the days” in Paragraph 3 refer to?

A.Simple life in the past.

B.Imaginary life.

C.Times of inventions.

D.Time for constant activity.小题3:. What is the author’s attitude towards the modern technology?

A.Critical.

B.Optimistic.

C.Objective.

D.Negative.小题4:. What does the passage mainly discuss?

A.The present and past times.

B.Modern technology and its influence.

C.Imaginations and inventions.

D.Machinery and human beings.

题型:实验题

看到RTU“运行”灯闪烁时,代表RTU处于以下哪种状态()

A.RTU网络通讯故障

B.RTU供电电压不稳

C.RTU正常运行

D.以上都不对

题型:实验题

下列说法中不正确的是()。

A、XBRL是一项专利技术

B、XBRL是一种交易协议

C、XBRL是编程语言

D、XBRL改变现有财务报告的账户分类体系

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