There is a difference between science and

题型:单项选择题

问题:

There is a difference between science and technology. Science is a method of answering (1) questions; technology is a method of solving practical problems. Science has to do with discovering the facts and relationships between (2) phenomena in nature and with establishing theories that (3) to organize these facts and relationships; technology has to do with tools, techniques, and (3) for applying the findings of science. Another (5) between science and technology has to do with the progress in each.

Progress in science (6) the human factor. Scientists, who seek to understand the universe and know the truth within the highest degree of (7) and certainty, cannot (8) their own or other people’s likes or dislikes or to popular ideas about the fitness of things. What scientists discover may shock or (9) people-as did Darwin’s theory of evolution. But even an unpleasant truth is (10) than likely to be useful; besides, we have the choice of refusing to believe it! But (11) so with technology; we do not have the choice of refusing to hear the sound produced by a supersonic aircraft flying overhead; we cannot refuse to breathe polluted air. (12) science, progress in technology must be measured (13) the human factor. The purpose of technology is to serve people—people (14) , not merely some people; and future generations, not merely those who presently wish to (15) advantage for themselves.

We are all familiar with the (16) use of technology. Many people blame technology itself (17) widespread pollution, resource depletion (枯竭) and even social decay in general—so much (18) the promise of technology is " (19) " That promise is a cleaner and healthier world. If wise applications of science and technology do not (20) a better world, what else will

3()

A.serve

B.assume

C.intend

D.prove

考点:普通考研中医综合中医综合
题型:单项选择题

极限=()。

A.A

B.B

C.C

D.D

题型:单项选择题

能引起5岁幼儿结膜炎的病原体是()

A.腺病毒

B.副流感病毒

C.沙眼衣原体

D.肺炎链球菌

E.埃及嗜血杆菌

题型:单项选择题

女,67岁。活动后心悸,气短3年,患有慢性支气管炎10年。体格检查:心脏听诊发现心率127/min,心律不齐,心电图P波小时,代之F波,心室律绝对不规律,QRS波群形态正常,该患者心律不齐最可能的诊断是

A.室性期前收缩

B.心房颤动

C.阵发性室性心动过速

D.阵发性室上性心动过速

E.二度Ⅰ型房室传导阻滞

题型:单项选择题

如图,为小型旋转电枢式发电机原理图,其矩形线圈在匀强磁场中绕垂直于磁场方向的固定轴OO′匀速转动,线圈的匝数n=100、电阻r=10Ω,线圈的两端经集流环与电阻R连接,电阻R=90Ω,与R并联的交流电压表为理想电表. 在t=0时刻,线圈平面与磁场方向平行,穿过每匝线圈的磁通量Φ随时间t按图(乙)所示正弦规律变化. 求:

(1)从t=0时刻开始转动四分之一周期过程中感应电动势;

(2)从t=0时刻开始转动四分之一周期过程中流过电阻R的电量;

(3)电路中交流电压表的示数.

(4)从t=0时刻开始转一周过程外力对线圈所做的功.

题型:单项选择题

简述跟单托收出口商的风险防范。

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