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【判断题】
软件是一种逻辑实体，而不是具体的物理实体，因而它具有抽象性。判断对错A.
正确
B.
错误
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【简答题】根据问句选答语。 ( ) 1. What is Christmas? ( ) 2. Why is Christmas special? ( ) 3. Who is he? ( ) 4. Do they bring any gifts? ( ) 5. When is Christmas? A. He is Santa. B. It's December twe...
【单选题】What is special about the solar panels used in the Wattway?
A.
They are made from cheap materials.
B.
They are only about half an inch thick.
C.
They can be laid right on top of existing highways.
D.
They can stand the wear and tear of natural elements.
【简答题】Please use the Minterms to express following formula:
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