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【判断题】
PAL制式的彩色电视信号在远距离传输时,使用YUV颜色模型,其中Y是一 种亮度信号,二种是传统模拟电视机外加一个机顶,第三种是可以接收数字电视信号的PC机A.
正确
B.
错误
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【单选题】The author of the passage mentions which of the following as an advantage of high-technology development?
A.
It encourages the modernization of existing manufacturing facilities.
B.
It promotes healthy competition between rival indutries.
C.
It encourages the growth of related industries.
D.
It takes full advantage of the existing workforce.
E.
It does not advantage one local workforce at the expense of another.
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【单选题】The application of mitochondrial transplantation might occur when______.
A.
medical technology becomes highly developed
B.
it can be tested to lead to a healthy baby
C.
it is proven that family resemblance will not be affected
D.
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A.
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B.
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C.
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D.
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