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      Text		      "問(wèn)題：設(shè)計(jì)一個(gè)有臨界值（采用下拉式列表框）的比"
"較器，該臨界值為輸入的變量。\n當(dāng)輸入信號(hào)大于0且大于臨界值時(shí)輸出為1，否則為0。"
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