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Clipart Gallery Danger and chemical products: Dangerous and chemical products
OpenOffice.org and LibreOffice can be extended with many extensions. This free extension adds over 400 vector CC cliparts related to security. You can enlarge them without loss of quality.
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The caliper
With this exercise you will learn how a caliper works. The parts of the caliper are discussed and also how to read them.
At the end of the exercise you will receive your score.
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