"Juggling one's life" probably means living a life characterized by______.
A. non-materialistic lifestyle
B. a bit of everything
C. extreme stress
D. anti-consumerism
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在CRC码中，接收端检查出某一位数据出错后，一般采用的纠正方法是()。
A. 请求重新发送
B. 删除数据
C. 判断余数值由接收端自行纠
D. 以上均可
Why does the author give a definition of instinct at the beginning of the article？
A. To ensure the reader knows the meaning.
B. To give the meaning he has chosen to believe.
C. To challenge a commonly held belief.
D. To introduce the topic.
Why was the idea of Christian salvation rejected in the Age of Reason？
A. Because of the decline in the power of Church.
Because of the power struggle found in doctrines.
C. Because Enlightenment thought is based on ethos.
D. Because it is expressed in metaphysical terms.
某调制解调器同时使用幅移键控和相移键控，采用0、π／2、π和3／2π种相位，每种相位又都有2个不同的幅值，在波特率为1200的情况下数据速率是()。
A. 7200bps
B. 4800bps
C. 2400bps
D. 1 200bps
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