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当前学科：中级电子图像处理工
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晒版时，使用的感光物尽管是光敏物，在光照下能发生化学反应，有时却能在亮室下而不必在暗室下操作。
A . 正确
B . 错误
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标志着罗马法已发展到最发达、最完备阶段的是（）。
Revise the following e-mail message. And the formatting of the message is to be scored.TO: Andrea KanaThis message is in response to your recent inquiry about mail costs. Your message of April 30 said that you wanted a brief explanation of what is being done in Mail Services to cut back on overall costs. I can tell you that I've been doing many things to cut costs.For one thing. l' m trying very hard to locate duplicate names and addresses inadvertently included in our mailing lists. This problem is particularly difficult when we merge multiple mailing lists. Another thing l'm doing relates to envelope size. Departments that use envelopes larger than 631 by 1131 are costing us a lot of money. which they do not realize. Therefore. 1 am making a proposal to all departments to limit the envelope size.Finally. l' m looking into the possibility of presorting some of our first- and third-class mail. Mailings that are presorted are charged less.George Miller
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