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【单选题】
()即邮件阅读总数与邮件送送总数的比值。A.
邮件送达率
B.
引导点进率
C.
邮件反馈率
D.
邮件开信率
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【简答题】函数 的间断点是(答案直接填写数字,有多个答案的话用分号;隔开)
【简答题】Who invented the printing press? In which year was it invented? The printing press was invented by ___________ in _________.
【单选题】Press printing techniques first appeared in ____.
A.
Germany
B.
Canada
C.
the United States
D.
China
【单选题】The word one in paragraph 2 refers to
A.
clay tablet
B.
scroll
C.
book
D.
printing press
【简答题】You might have to go back to the initial epoch printing press to find a publishing technology as disruptive. The internet can reproduce content and distribute it almost anywhere at nearly light speed....
【简答题】If you asked people what the most important invention has been,many would say the printing press. Others _1_ say the wheel.But even though it’s_2_whether the appearance of the printing press affected ...
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