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【单选题】
For laymen ethnology is probably the most interesting of the biological sciences for the very reason that it concerns animals in their normal activities and therefore, if we wish, we can assess the possible dangers and advantages in our own behavioral roots. Ethnology also is interesting methodologically because it combines in new ways very scrupulous field observations with experimentation in laboratories. The field workers have had some handicaps in winning respect for themselves. For a long time they were considered as little better than amateur animal-watchers certainly not scientists, since their facts were not gained by experimental procedures: they could not conform. to the hard-and-fast rule that a problem set up and solved by one scientist must be tested by other scientists, under identical conditions and reaching identical results. Of course many situations in the lives of animals simply cannot be rehearsed and controlled in this way. The fall flocking of wild free birds can't be, or the homing of animals over long distances, or even details of spontaneous family relationships. Since these never can be reproduced in a laboratory, are they then not worth knowing about? The ethnologists who choose field work have got themselves out of this impasse by greatly refining the techniques of observing. At the start of a project all the animals to be studied are live-trapped, marked individually, and released. Motion pictures, often in color, provide permanent records of their subsequent activities. Recording of the animals' voices by electrical sound equipment is considered essential, and the most meticulous notes are kept of all that occurs. With this material other biologists, far from the scene, later can verify the reports. Moreover, two field observers often go out together, checking each other's observations right there in the field. Ethnology, the word, is derived from the Greek ethos, meaning the characteristic traits or features which distinguish any particular group of people or, in biology, a group of animals such as a species. Ethnologists have the intention of studying 'the whole sequence of acts which constitute an animal's behavior.' In abridged dictionaries ethnology is sometimes defined simply as 'the objective study of animal behavior,' and ethnologists do emphasize their wish to eliminate myths. In the first sentence, the word 'laymen' means ______.
A.
people who stand aside
B.
people who are not trained as biologists
C.
people who are amateur biologists
D.
people who love animals
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【判断题】3岁儿童左右的儿童小脑发育基本成熟,动作变得准确,身体平衡性提高、摔跤少。
A.
正确
B.
错误
【单选题】基础货币等于(P285)
A.
存款准备金+商业银行库存现金
B.
存款准备金+流通中的现金
C.
存款准备金-商业银行库存现金
D.
存款准备金+活期存款
【单选题】下列程序段的执行结果为( ) x = 0 y = 1 Do x = x + y y = y + 1 Loop While x < 10 Print x; y
A.
10  5
B.
x  y
C.
0   1
D.
10   30
【简答题】焊接翻转机是将工件 或倾斜,使之处于有利装焊位置的焊件变位机械。
【单选题】下列关于楼梯位置和数量说法,错误的是( )。
A.
公共建筑一般至少应设置2部楼梯
B.
耐火等级为二级的2~3层建筑,每层最大建筑面积不超过500m²,且第二层与第三层人数之和不超过100人,可设一个疏散楼梯(医院、疗养院、托儿所、幼儿园除外)
C.
楼梯适合放在建筑物的角部和边部,以便于荷载的传递
D.
主要楼梯应有直接的采光和自然通风
【单选题】目前广泛应用的车票类型是( )
A.
磁卡
B.
IC
C.
纽扣
D.
扫码
【单选题】1已知i1和i2为某电路的两个支路电流,该电路处于正弦稳态中,且知,,则在相位关系上( )
A.
HYPERLINK "http://learn.bit.edu.cn/courseware/dep5/dlfxjc/xiaceti/t3_2.htm" i1超前i230°
B.
i1滞后i230°
C.
i1滞后i260°
D.
HYPERLINK "http://learn.bit.edu.cn/courseware/dep5/dlfxjc/xiaceti/error" i1与i2同相
【简答题】A good friend is one who will ________ you when you are in trouble. A) stand for B) stand by C) stand up to D) stand up with
【多选题】托儿所、幼儿园的儿童用房,老年人活动场所和儿童游乐厅等其他儿童活动场所,不得设置在地下、半地下(室)内,可设在一、二级耐火等级建筑的( )层。
A.
B.
C.
D.
E.
【判断题】人物传记类纪录片不管传主是一个伟人还是一个罪犯,都要将人物放在社会历史的背景中加以理解,解说配音时要深入人物的心灵,体会人物的心境。
A.
正确
B.
错误
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