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【单选题】
气象传真机所接收到的图形重复,产生畸变的原因是:A.
收发不同相
B.
收发不同步
C.
收发速度不同
D.
收发合作系数不同
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举一反三
【简答题】性比是种群中雄性个体和雌性个体的____比例。受精卵的雌雄比例大致为1:1,称第一性比;幼体成长到性成熟阶段,由于各种原因,雄性与雌性比持续变化,到个体成熟为止,雄性与雌性的比例叫____ 。个体____后的性比,叫第三性比。
【简答题】选择适当的词,用正确的形式填空: friend comfort attract complex honesty 1、The workers from countryside want to have a ___ house in the city so much. 2、The Chinese students are very ___ to their n...
【简答题】个体成熟的原则
【简答题】Nowadays, a complex rate structure would be applied in the hotel. Could you name room rate of a hotel?
【简答题】松属植物成熟的雄配子体由 个退化原叶体细胞、1 个 和1个 组成。
【简答题】用所给单词的适当形式填空 friendly comfort attract complex honesty The workers from countryside want to have a ____house in the city so much. The Chinese students are very____to their new classmates fro...
【简答题】用所给单词的正确形式填空。 friend comfort attract complex honesty The workers from countryside want to have a _________ house in the city so much. The Chinese students are very ________ to their ...
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