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用0和1描述输入、输出逻辑关系的表格称为真值表。
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8421码、余3BCD码均是有权代码。
In the boxes below are some of the expressions you have learned in this unit.Do you know how to use them in the proper context? Now check for yourself by doing the blank-filling exercise. Change the form where necessary. (Unit 2)1) The refrigerator I bought last week is too large to ______ our new kitchen.2) When the flood broke out, the little girl clung to a tree and managed to______.3) Her parents are divorced and her brother is in prison––it is a sad______, indeed.4) It is said that in no country other than Britain can one experience four seasons______a single day.5) The moment my father came in I could see from his worried face that his effort to find a job had been______once again.6) He's disorganized; he's inefficient; he's never been there when you want him.______ , he is hopeless.7) Seeing his neighbour's house on fire, he quickly______the phone and dialled 119.8) You can't always insist on your own way––there has to be some______.
编制成本费用预算时，不考虑以往会计期间所发生的费用项目、数额的是（ ）。
从内容上看，下列不属于财务预算的是（ ）。
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