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【单选题】
KCL实际上是电流( )在电路节点上的体现。A.
连续性
B.
守恒性
C.
绝对性
D.
相对性
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举一反三
【单选题】Why Chinese Zodiac starts with the year of rat according to the video?
A.
Rats are the smallest
B.
Rats run faster than other animals
C.
Rats took a ride on the ox
【单选题】According to M. Harvery Brenner's research,if there is 1% increase in the unemployment rate, how many people will die from cirrhosis of the liver?
A.
37,000.
B.
20,000.
C.
900.
D.
500.
【单选题】According to the passage, naked mole rat colonies may differ from all other known vertebrate groups in which of the following ways?
A.
Naked mole rats exhibit an extreme form. of altruism.
B.
Naked mole rats are cooperative breeders.
C.
Among naked mole rats, many males are permitted to breed with a single dominant female.
D.
Among naked mole rats, different tasks are performed at different times in an individual’s life.
E.
Among naked mole rats, fighting results in the selection of a breeding female.
【简答题】下列不属于市场失灵的领域的有() A国家公共安全 B公共医疗卫生 C法律与道德秩序 D个人生活用品
【简答题】20世纪80年代，天津市政建设跟不上，人民群众生活存在许多实际困难，“坐车没有走路快，自来水腌咸菜，临建拆得没有搭得快”，群众意见很大。市政府决心为群众办实事，一件一件地解决落实，说到做到，样样兑现。1983年，首先为市民办了10件实事，从1984年开始每年坚持为城乡人民办20年实事，到已办了130 件。如新建、改建了3000万平方米的住宅，等于解放以来前30年建房总数的3 倍，使一半以...
【单选题】According to the passage, the following explanatory variables accounts for naked mole rat behavior. EXCEPT ______.
A.
age
B.
size
C.
growth rate
D.
reproductive status
【单选题】下列关于海图数据可靠性的说法错误的是 。
A.
应使用权威机构发行的ENC海图数据
B.
如果使用了其他数据，要甄别其来源是否可靠和坐标系是否统一
C.
在购买数字产品时，注意检查发行机构是否为官方或由官方授权
D.
官方ENC定期更新
【单选题】According to the video , 2020 This year of Rat is an unusual _________months long.
A.
12
B.
13
【多选题】According to the video, in Chinese astrology the Rat represents a person who is ______________________.
A.
quick-witted
B.
smart
C.
versatile
D.
good at saving money
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