概率（Probability）
生存概率(survival probability)
The uncertainty of an event is measured by its probability of occurrence and is inversely proportional to that. The more uncertain an event is. The more information is required to resolve uncertainty of that event. The amount of information is measured in （）
A:possibility B:bits C:bps D:probability
In your project，there is：50% probability for $40000 profit，50% probability for $25000 loss．What is the expected profit in your project ？（）
A:$32500 B:$25000 C:$7500 D:-$7500(i.e. loss of $7500)
In your project，there is：50% probability for $40000 profit，50% probability for $25000 loss．What is the expected profit in your project
A:$32500． B:$25000． C:$7500． D:-$7500( loss of $7500)．
下面有3篇短文，每篇短文后有5道题，每题后面有4个选项。请仔细阅读短文并根据短文回答其后面的问题，从4个选项中选择1个最佳答案。
{{B}}第一篇{{/B}}
? ? Awareness of earthquake hazards is now
well developed in many countries, and the U. S. Geological Survey has recently
published a map showing the relative probability of earthquake activity for
various areas in the United States.
? ?The major hazard represented
by seismic events along the great earthquake belts of the world has now been
clearly recognized, and a great deal of research money and effort is being
directed toward earthquake prediction and possible control. Active fault
systems, such as the San Andreas fault in California, are carefully monitored
for observable changes that could indicate an impending earthquake. Although the
nature of earthquakes and earthquake belts are rela tively well understood, the
possibility of accurately predicting major earthquakes, much less controlling
them, still appears remote.
? ?Probably the most intriguing
development in this field relates to the Rocky Mountain Arsenal earthquakes near
Denver, Colorado. In 1962 injection of fluid wastes into the Precambrian
basement rocks nearly 4000m below the ground surface was followed by a series of
small earthquakes. ?Studies of this phenomenon have indicated that the
injected fluid lubricated a fault zone under stress and thereby promoted release
of seismic energy. Experimentation at the site is still going on, but the
connection between the fluid injection and earthquake activity was quickly rea
lized. Accordingly, the suggestion has been made that potentially destructive
earthquakes could be converted into numerous nondestructive minor earthquakes by
using fluid injection techniques. ?Thus, although man has no hope whatever
of controlling the major earth movements that lead to earthquakes, he may in
some cases be able to influence the manner in which earthquake energy is
dissipated. |
Which of the following can be the best title for the passage?
A:Awareness of Earthquake Hazards B:Earthquake Is a Dangerous Thing C:Earthquake Prediction and Control D:The Probability of Earthquake Activity for Various Areas in the United States
The uncertainty of an event is measured by its probability of occurrence and is inversely proportional to that.The more uncertain an event is,the more information is required to resolve uncertainty of that event.The amount of information is measured in（）
A:possibility B:bits C:bps D:probability
The uncertainty of an event is measured by its probability of occurrence and is inversely proportional to that. The more uncertain an event is, the more information is required to resolve uncertainty of that event. The amount of information is measured in ______.
A:possibility B:bits C:bps D:probability
The uncertainty of an event is measured by its probability of occurrence and is inversely proportional to that. The more uncertain an event is. The more information is required to resolve uncertainty of that event. The amount of information is measured in （）
A:possibility B:bits C:bps D:probability
单项选择
