( )(多选)下列属于减小系统误差的方法是: A 、校准仪器 B、空白试验 C、对照试验 D、回收试验 E 、增加平行测定次数
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【简答题】As we all know, 1 shopping is 2 our way of life. Generally speaking, it has several 3 . First of all, you can shop at 4 time. What’s more, it’s very 5 to shop on the 6 . The only things you 7 are a co...
【简答题】词汇运用 1. Who is most likely ________(受益于) the policy? 2. Generally speaking,children are easier ________(适应新环境). 3. I ________(对他烦透了) because he kept asking me questions. 4. India ________(1947年脱离英国获得独...