短接开关设备或阻波器的分流线截面和两端线夹的载流容量,应满足最大短路电流的要求。

题型:问答题

问题:

短接开关设备或阻波器的分流线截面和两端线夹的载流容量,应满足最大短路电流的要求。

考点:电力考试电力安全工作规程(线路部分)电力安全工作规程(线路部分)试题5
题型:问答题

男20岁,头昏、乏力、全身痛、皮肤出现紫癜半月余,胸骨明显压痛,肝1.5cm,脾1cm。血红蛋白60g/L白细胞2×109/L,血小板20×109L,诊断最可能是()

A.再生障碍性贫血

B.溶血性贫血

C.巨幼红细胞性贫血

D.急性白血病

E.特发性血小板减少性紫癜

题型:问答题

句型转换。

1. The news that he got full marks surprised the little  boy.(同义句转换)

    The little boy________ ________ ________ the news that  he got full marks.

2. Jim has never been to the Great Wall.(变为反意疑问句)  

    Jim has never been to the Great Wall, ________    ________?

3. My father is the doctor. My father saved the dying  boy.(连成一句)

    My father is the doctor________ ________ the dying boy.

4. After she spoke I knew she was a Japanese.(同义句转换)

    I________ ________ she was a Japanese________ she  spoke.

5. Suzhou lies in the north of Jiangsu Province.(对画线部分提问)

      ________ ________ Suzhou________ ?

题型:问答题

阅读下列材料:

图片一:1950年四川贫民分到了土地
图片二:1980年农民领取包产到户合同书

回答:(1)图片一、二的历史情境分别反映了当时我国农村发生的什么重大事件?____________________________________________________________________________________________(2)这两次重大事件的主要内容分别是什么?____________________________________________________________________________________________(3)这两次重大事件对我国工业发展产生了什么积极影响?____________________________________________________________________________________________

题型:问答题

Passage Two

When an invention is made, the inventor has three possible courses of action open to him: he can give the invention to the world by publishing it, keep the idea secret, or patent it.
A granted patent is the result of a bargain made between an inventor and the state, by which the inventor gets a limited period of monopoly (垄断) and publishes full details of his invention to the public after that period terminates (终止).
Only in most exceptional circumstances is the life-span of a patent extended to alter this normal process of events.
The longest extension ever granted was to Georges Valensi: his 1939 patent for color TV receiver circuitry was extended until 1971 because for most of the patent’s normal life there was no color TV to receive and thus no hope of reward for the invention.
Because a patent remains permanently public after it has terminated, the shelves of the library attached to the patent office contain details of literally millions of ideas that are free for anyone to use and, if older than half a century, sometimes even re-patent. Indeed, patent experts often advise anyone wishing to avoid the high cost of conducting a search through live patents that the one sure way of avoiding violation of any other inventor’s right is to plagiarize a dead patent. Likewise, because publication of an idea in any other form permanently invalidates (使无效) further patents on that idea, it is traditionally safe to take ideas from other areas of print. Much modern technological advance is based on these presumptions of legal security.
Anyone closely involved in patents and inventions soon learns that most "new" ideas are, in fact, as old as the hills. It is their reduction to commercial practice, either through necessity of dedication, or through the availability of new technology, that makes news and money. The basic patent for the theory magnetic recording dates back to 1886. Many of the original ideas behind television originate from the late 19th and early 20th century. Even the Volkswagen rear engine car was anticipated by a 1904 patent of a cart with the horse at the rear.

The passage is mainly about ______ .

A.an approach to patents

B.the application for patents

C.the use of patents

D.the access to patents

题型:问答题

WCDMA支持以下哪三种切换方式:()

A.软切换

B.更软切换

C.硬切换

D.接力切换

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