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【单选题】
一个人打靶时连续射击两次，事件“至少有一次中靶”的对立事件是（ ）A.
至多有一次中靶
B.
两次都中靶
C.
只有一次中靶
D.
两次都不中靶
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举一反三
【简答题】The examples of the Challenger and Chernobyl cited by the author serve to show that ________. A) if not given close examination, technology could be used to destroy our world B) technology is a human ...
【简答题】如何划分部门,应遵循什么原则?有哪几种方法?
【单选题】The examples of the Challenger and Chernobyl cited by the author serve to show that ______.
A.
if not given close examination, technology could be used to destroy our word
B.
technology is a human creation, so we are responsible for it
C.
technology usually goes wrong, if not controlled by man
D.
being a human creation, technology is liable to error
【单选题】Why does the professor mention VISA and American Express?
A.
To show examples of store credit cards.
B.
To show examples of credit companies.
C.
To show advantages of credit cards.
D.
To show disadvantages of credit cards.
【单选题】These examples show that openness and the ability to change brings couples a giant step closer to the marital harmony they ______.
A.
request
B.
negotiate
C.
crave
D.
detest
【单选题】The examples of the Challenger and Chernobyl cited by the author serve to show that ______.
A.
if not given close examination, technology could be used to destroy our world
B.
technology is a human creation, so we are responsible for it
C.
technology usually goes wrong, if not controlled by man
D.
being a human creation, technology is liable to error
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