一批热水器共有98台，其中甲厂生产的有56台，乙厂生产的有42台，用分层抽样从中抽取一个容量为14的样本，那么甲、乙两厂各抽取的热水器的台数是

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一批热水器共有98台，其中甲厂生产的有56台，乙厂生产的有42台，用分层抽样从中抽取一个容量为14的样本，那么甲、乙两厂各抽取的热水器的台数是（）

A：9，5

B：8，6

C：10，4

D：7，7

上一题下一题 0.0难度选择题更新时间:2019-07-24 05:41:13

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B

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                                                                         My School Day in London
      Tim Hunt is telling 1 Chinese classmates about his school day in London.
     My school day in London is different 2 my school day here in China. School starts 3 nine o'clock. I get up at 7:00 4weekdays. I go to school 5 underground(地铁). It 6 about forty–five minutes. I have 7 at school. Classes are over at 3:15. It is early, 8 I stay at school and play games 9 my friends. I am 10 the basketball team. We practice(联系)on Monday 11 Wednesday. We have a match 12 Friday afternoon.
     On Saturday 13 I get up late. Then I 14 my parents tidy(弄整洁)the house and the garden. In the evening I often go to film or a club(俱乐部).On Sunday I have a good rest and of course, I do 15.

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