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The image shows a black and white drawing of four different types of cylinders, which appear to be refractometers. The cylinders are arranged in a line, with the largest cylinder in the center and two smaller cylinders on either side. The text at the bottom of the image reads "Refractometers".

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The image shows an illuminated manuscript with a drawing of a man and a woman sitting on a throne, surrounded by a group of people. The man is wearing a long robe and has a crown of thorns on his head, while the woman is holding a book in her hands. The background of the painting is a deep blue, and the figures are illuminated by a golden light.
The image shows a black and white drawing of a wooden door with two columns on either side. At the bottom of the image, there is some text.
The image shows a black and white photo of a bridge under construction, with a few people standing on the bridge, surrounded by trees and plants. The sky is visible in the background.
The image shows an old tank sitting in the middle of a dirt field, surrounded by stones and trees. The sky is visible in the background, and there is a watermark on the image.
The image shows a black and white drawing of a plant with flowers and roots, set against a white background. At the bottom of the image, there is some text.
The image shows a merry christmas card with a colorful triangle on a green background. The triangle is composed of different colors and has the words "Merry Christmas" written on it.
The image shows an old book with a drawing of a man standing on top of a wooden pole, holding a sword in one hand and a flag in the other. At the bottom of the image, there is some text which reads "Tilsdenkmal in Shanghai". The man is wearing traditional Chinese clothing and has a determined expression on his face, suggesting he is ready to take on any challenge.
The image shows a gold speech bubble on a white background. The speech bubble is in the shape of an arrow, giving it a unique and eye-catching look. The gold color of the speech bubble stands out against the white background, making it the focal point of the image.
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