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A.酪氨酸 B.脯氨酸 C. 半胱氨酸 D.异亮氨酸 127．体内经代谢可转变生成牛磺酸的氨基酸的是 128．属营养必需氨基酸的是
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【简答题】数据字典的内容和作用是什么?
【简答题】If you want to improve your child’s results at school, you could do a lot worse than ensuring that they do plenty of exercise. Scientists have already shown that physical activity can make you brainie...
【简答题】数据字典的内容和作用是什么？
【简答题】Long ago，in a small village of Wakefield lived two farmers，Harry and Peter．Harry was very hard．working while Peter was 36 ．Every day Harry got up early and came home late，but Peter walked around for f...
【简答题】数据字典的内容和作用是什么?
【单选题】差错控制方式可以分成图四种基本类型：前向纠错(FEC)，自动回询重传(ARQ)，混合差错控制方式(HEC)，信息反馈(IRQ)。其中，在发送端将数据信息按一定的规则附加余码 元，组成纠错码属于_________。
A.
前向纠错(FEC)
B.
自动回询重传(ARQ)
C.
混合差错控制方式(HEC)
D.
信息反馈(IRQ)
【简答题】You get to meet people who actively want to do the things you do 1. than having to persuade friends at home into an 2. they might not enjoy or be ready for. You need to be with people who are 3. it, n...
【简答题】阅读理解 If you want to improve your child's results at school, you could do a lot worse than ensuring that they do plenty of exercise．Scientists have already shown that physical activity can make you bra...
【简答题】A．Avoid the difficult part in the job. B．Ask the company for help. C．Learn hard by working extra hours. D．Find a more experienced counselor.
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