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中国的证券清算则由专门的商业银行完成。()

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发病率指标来自所有病人资料。()

Which of the following sentences expresses INTENTION?

A. If Tom asks his father to buy him a bicycle, his father will probably do so.
B. They will have arrived by now.
C. You shall stay with us as long as you like.
D. You shall marry him!

实验性研究中实施双盲观察的主要目的是减少抽样误差的影响。()

实时流式传输,保证媒体信号带宽与网络连接配匹,需要专用流媒体服务器与传输协议。()

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