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共找到 8 与f______ 相关的结果,耗时15 ms
设关系模式R(A,B,C) ,F是R上成立的FD集,F={B-C},则分解ρ={AB,BC}相对于F______。A.是无损连接,也
设关系模式R(A,B,C) ,F是R上成立的FD集,F={B-C},则分解ρ={AB,BC}相对于F______。A.是无损连接,也是保持FD的分解B.是无损连接,但不保持FD的分解C.不是无损连接,但保持FD的分解D.既不是无损连接,也不保持FD的分解
we should open the window to keep the air
f______
.首字母填空
英语
Yesterday my father
f______
to lock the door when he left home .Yesterday my father
f______
to lock the door when he left home .And he
英语
l____ his keys
英语句子填词,An old woman went to a h______ .When a doctor came to see her ,the doctor said,"Well ,Mrs.Brown ,you're going to have some inje
英语
tions ,and the
根据句意及首字母提示填空/根据括号内所给单词用适当形式填空/选择填空1.We call apples,oranges,strawberries,and pears
f______
.2.Let"s think a______ the food.3.Tom eats __
英语
___(vegetable)
there is more
f______
air in the country.
英语
初一英语评价手册上的几道题目根据首字母填空.-1.His parernts are b______ tall.He plays basketball
f______
Houst Rockets in teh USA.Now more and more American
英语
begin to like
根据句意及首字母提示,完成下列单词的拼写. It"s hard to say what the
f______
will be like.
英语
1
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