A cough is usually nothing to worry abou

发布时间：2017-06-23 03:23 │ 来源：www.tikuol.com

题型：选择题

问题：

A cough is usually nothing to worry about unless it lasts for tendays____．[ ]

A. or more

B. instead

C. at most

D. only

考点：并列连词

题型：选择题

如图所示电路中，电阻R₁=R₂=R₃=10Ω，电源内阻r=5Ω，电压表可视为理想电表．当开关S₁和S₂均闭合时，电压表的示数为10V．

（1）电阻R₂中的电流为多大？

（2）路端电压为多大？

（3）电源的电动势为多大？

（4）当开关S₁闭合而S₂断开时，电压表的示数变为多大？

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题型：选择题

当泵缸体内压力减小的时候，（）。

A、吸入阀被顶开，排出阀同样也被顶开

B、吸入阀关闭，排出阀被顶开

C、吸入阀被顶开，排出阀关闭

D、吸入阀关闭，排出阀也关闭

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题型：选择题

犯罪既遂后，犯罪行为和不法状态在一定时间内处于连续状态的犯罪形态称（）。

A、结果加重犯

B、惯犯

C、继续犯

D、连续犯

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题型：选择题

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 19^th and early 20^th century. Even the Volkswagen rear engine car was anticipated by a 1904 patent of a cart with the horse at the rear.

The word "plagiarize" (Line 5, Para. 5) most probably means ______ .

A．steal and use

B．give reward to

C．make public

D．take and change

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题型：选择题

YJ19卷烟机牌子箱调整时，（）的压合顺序是：第二压纸辊、第二打印辊、第一打印辊、第一压纸辊。

A.钢印辊

B.打印辊

C.供纸辊

D.压纸辊

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