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【单选题】
关于码距、检错和纠错的说法有： ①为了检验e个误码，要求编码系统的码距d应满足：d≥2e+1； ②为了检验t个误码，要求编码系统的码距d应满足：d≥t+1； ③4位二进制编码1000与1010的码距为10； ④海明码能纠正2位错误。 其中正确的个数为(43)。A.
0
B.
1
C.
2
D.
3
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皮皮学刷刷变学霸
举一反三
【单选题】In the case of seat belts, instead of a simple, straightforward reduction in the deaths, the end result is actually a more complicated redistribution of risk and fatalities.
A.
Seat belts reduce the death rate no matter how complicated the distribution of risk and fatalities is.
B.
Seat belts may seem to reduce the death rate, but actually the risks still exist but in a different way.
【单选题】In the case of seat belts, instead of a simple, straightforward reduction in deaths, the end result is actually a more complicated redistribution of risk and fatalities.
A.
Seat belts reduce the death rate no matter how complicated the distribution of risk and fatalities is.
B.
Seat belts may seem to reduce the death rate, but actually the risks will exist but in a different way.
【单选题】You'd better keep a seat for her in case she____
A.
coming
B.
should come
C.
is coming
D.
may come
【简答题】发电机并列操作时，要求在并列瞬间的冲击电流不能超过允许值，并列后发电机应能迅速转入（）。
【单选题】Donna dare not settle herself too comfortably into her seat in case she _________.
A.
slept through
B.
dozed down
C.
slept away
D.
dozed off
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