According to the passage，a great variety of influenza strains can appear when______.A. H and N spikes are producedB. animal and bird viruses are combinedC. dissimilar types virus recombineD. two viruses of the same type are contracted

题目

According to the passage，a great variety of influenza strains can appear when______.

A. H and N spikes are produced

B. animal and bird viruses are combined

C. dissimilar types virus recombine

D. two viruses of the same type are contracted

相似考题

1.She had an outward______(appear)，but deep down she was really worried.

2.大众宝来自动空调控制单元J255和其他的控制单元通过CAN-H和CAN-L进行信号交换。（）

3.写出反义词 appear

4.With the ________ (appear) of credit cards more people got into debt.

参考答案和解析
正确答案：C
[解析] 见第二段第二句话“The result of such recombinations is a great variety of strains constraining different H and N spikes. ”。
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    大众车系舒适CAN总线睡眠时，CAN-H的电压是0V，CAN-L的电压是 。


    D

  • 第2题：

    根据CAN信号来识别出CAN-L线对地短路 。

    A．CAN-H线继续正常工作

    B．CAN-L线一直接地

    C．两个信号的隐性电平明显低于2V

    D．两个信号的显性电平明显低于2V


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  • 第3题：

    17、写出反义词 appear


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  • 第4题：

    大众车系舒适CAN总线系统中CAN-H和CAN-L之间没有终端电阻。


    错误

  • 第5题：

    1.在车载电网控制单元J386和J387之间可以不用舒适CAN-H和CAN-L连接。


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  • 第6题：

    大众车系睡眠模式下总线电压：CAN-L为5V，CAN-H为0V。


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