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【单选题】
Why people who deal with a lot of numbers will be happy to use Macintosh?A.
It is easy to carry.
B.
It is waterproof.
C.
It has a numeral keypad.
D.
It is durable.
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举一反三
【简答题】行列式D中若某行(列)为0，则D=0． 行列式D中若任一行(列)不为0，则D≠0?
【判断题】N二4 库存管理中ABC分类法就是把所有库存单价很高很重要的物品定为A类(这类无物品品种很少的),需要重点关注。相反很多库存物品价值比较小,就确定为C类,可以在这类物品上少费时间。处于中间的就是B类物质。
A.
正确
B.
错误
【单选题】Steve isn’t as ______ as Kelly. He often makes mistakes in his writing.
A.
careless
B.
tidy
C.
careful
D.
difficult
【简答题】补全对话。 Charley: Come on, Steve. 1 Steve: Wait a moment. 2 Charley: OK. Steve: By the way, can we give my sister a ride home tonight? Charley: Sure. 3 Steve: Yes. She wants to take some pictures. Charle...
【简答题】行列式 中 的代数余子式的值为
【简答题】大气包括干洁空气、水蒸气和各种()。
【单选题】– Steve. We will take an examination in physics next week. --- Yes, but don’t work too hard. _______.
A.
It doesn’t matter
B.
All the best
C.
Take it easy
D.
Try your luck
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