电磁铁实际上就是一个的 ______螺线管,其磁性的有无可以由 ______电流

题型:填空题

问题:

电磁铁实际上就是一个的 ______螺线管,其磁性的有无可以由 ______电流来控制.

考点:电磁铁的定义
题型:填空题

医务人员的情感不包括()

A.同情感

B.负罪感

C.责任感

D.事业感

E.职业情感

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How should one invest a sum of money in these days of inflation (通货膨胀) Left in a bank it will hardly keep its value, however high the interest rate is. Only a brave man, or a very rich one, dares to buy and sell on the Stock Market. Today it seems that one of the best ways to protect your savings, and even increase your wealth is to buy beautiful objects from the past. Here I am going to offer some advice on collecting antique clocks, which I personally consider are among the most interesting of antiques.
I sometimes wonder what a being from another planet might report back about our way of life. "The planet Earth is ruled by a mysterious creature that sits or stands in a room and makes a strange ticking sound. It has a face with twelve black marks and two hands. Men can do nothing without its permission, and it fastens its young round people’s wrists so that everywhere men go they are still under its control. This creature is the real master of Earth and men are its slaves. "
Whether or not we are slaves of time today depends on our culture and personality, but it is believed that many years ago kings kept special slaves to tell the time. Certain men were very clever at measuring the time of day according to the beating of their own hearts. They were made to stand in a fixed place and every hour or so would shout the time. So it seems that the first clocks were human beings.
However, men quickly found more convenient and reliable ways of telling .the time. They learned to use the shadows cast by the sun. They marked the hours on candles, used sand in hour-glasses, and invented water-clocks. Indeed, any serious student of antiques should spend as much time as possible visiting palaces, stately homes and museums to see some of the finest examples of clocks from the past.
Antique clocks could be very expensive, but one of the joys of collecting clocks is that it is still possible to find quite cheap ones for your own home. After all, if you are going to be ruled by the time, why not invest in air antique clock and perhaps make a future profit

By quoting (引用) the remark of a being from another planet, the author intends to ______.

A.suggest human beings are controlled by a clock

B.describe why clocks can rule the planet Earth

C.tell readers what clocks look like

D.compare clicks to human beings

题型:填空题

慢性呼衰,给氧原则是()

A.持续高流量

B.持续低流量吸氧

C.间断低流量

D.先高流量待动脉氧饱和度恢复正常改为低流量

E.间断高流量

题型:填空题

防雷装置应沿建筑物的外墙敷设,并经最短途径接地,如有特殊要求可以暗设。

题型:填空题

男性,78岁,因不能自行排尿10小时入院。病人曾有排尿困难3年,排尿时常出现尿流中断,改变姿势后又能恢复排尿。夜尿:3-5次。查体:一般情况好,下腹膨隆,浊音界位于脐下2指,B超膀胱内有多枚2~4cm强光团

该病人初步诊断为

A.前列腺增生伴尿路感染

B. * * 狭窄

C.前列腺增生

D.神经源性膀胱

E.前列腺增生伴膀胱结石

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