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题型:单选题 题类:常考题 难易度:普通
【缺题锁定】黑龙江省大庆实验中学2019届高三上学期生物第一次月考试卷
①2mL淀粉溶液+2mL唾液,37℃,5min
②2mL淀粉溶液+2mL清水,37℃,5min
③2mL淀粉溶液+2mL稀释唾液,37℃,5min
④2mL淀粉溶液+2mL唾液,95℃,5min
⑤2mL淀粉溶液+2mL唾液+3滴盐酸,37℃,5min.
①尿液 ②胃液 ③汗液 ④唾液
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