1 There are three versions of the oral glucose tolerance test: the 1-hour test, the 2-hour test, and the 3-hour test.  In the eight hours leading up to the test, you should not eat food or drink any beverages aside from water.
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Articles, Search Engines. The first thing you need to understand is what a Web Crawler or Spider is and how it works. A Search Engine Spider (also known as a crawler, Robot, SearchBot or simply a Bot) is a program that most search engines use to find whatâs new on the Internet. Googleâs web crawler is known as GoogleBot.