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一、填空题 1.纤维素变为氧化纤维素的因素(外因)是:温度、湿度、光线和氧(包括氧化剂)。 2.档案字迹材料中,不耐久的有:纯蓝墨水、纯红墨水、复写纸、圆珠笔、铅笔、印台油等字迹。 3.库房内宜用白炽灯,不宜用日光灯。 4.昆虫的整个发育过程可分为两个阶段:第一阶段为胚胎发育,第二阶段为胚后发育。 5.库房窗户的遮阳形式主要有:水平式、垂直式、综合式和挡板式四种。 二、简答题 1.蓝黑墨水中为什么要同时使用鞣酸与没食子酸? 答;鞣酸与硫酸亚铁反应后生成鞣酸亚铁,鞣酸亚铁在空气中氧化成的鞣酸铁,鞣酸铁的黑度不高,但比较耐水。没食子酸与硫酸亚铁反应后生成没食子酸亚铁,没食子酸亚铁在空气中氧化成为没食子酸铁,没食子酸铁的黑度高且较耐光。在蓝黑墨水中同时使用鞣酸与没食子酸可以取长补短,提高字迹的耐久性。
First, fill in the blank 1. Cellulose into oxidized cellulose factors (external) are: temperature, humidity, light and oxygen (including oxidants). 2 file handwriting materials, not durable are: pure blue ink, pure red ink, carbon paper, ball-point pen, pencil, ink and other printing ink. 3. Treasury should use incandescent lamps, should not be fluorescent. The whole process of insect development can be divided into two stages: the first stage of embryonic development, the second stage of embryo development. 5. Treasury window shade forms are: horizontal, vertical, integrated and baffle four. Second, the short answer questions 1. Blue and black ink Why use both tannic acid and gallic acid? Answer; tannic acid and ferrous sulfate reaction of ferrous tannate, ferrous tannate in the air into the tannic acid iron, Black tannic acid is not high, but more water-resistant. Gallic acid and ferrous sulfate react to form ferrous gallate. Ferrous gallate is oxidized in the air to form gallic acid. Gallic acid is highly black and light-resistant. The use of both tannic acid and gallic acid in blue-black inks enhances the durability of the handwriting.