皮皮学，免费搜题
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【单选题】
在面向对象技术中，不同的对象在收到同一消息时可以产生完全不同的结果，这一现象称为（ ） 。利用类的层次关系，把具有通用功能的消息存放在高层次，而不同的实现这一功能的行为放在较低层次，在这些低层次上生成的对象能够给通用消息以不同的响应。
A.
绑定
B.
继承
C.
消息
D.
多态
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举一反三
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B.
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【单选题】Which is NOT mentioned as one of the requirement of exchange students?
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Language skill.
B.
Age limitation.
C.
Health condition.
D.
Academic scores.
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【简答题】车床主轴箱的功用是支承主轴并传动主轴,使主轴带动 按照规定的转速旋转,以实现主运动。
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【单选题】Which one is NOT the protesters' requirement?
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End of the occupation of Iraq.
B.
Release of all the Iraqi prisoners.
C.
The trial of Saddam.
D.
New leaders must be elected by themselves.
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【单选题】我们把大前提，小前提，结论都是充分条件的推理叫做什么?
A.
假言三段论
B.
直言三段论
C.
充分论
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充分推理
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【判断题】One requirement of a fixed order quantity system is that the inventory must be constantly monitored.
A.
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B.
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【判断题】若两直线的同面投影都相交,且交点符合同一个点的投影规律,则两直线在空间必相交。
A.
正确
B.
错误
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【判断题】One requirement of a fixed order quantity system is that the inventory must be constantly monitored.
A.
正确
B.
错误
查看完整题目与答案
【单选题】which one of the following is not a requirement of just-in-time systems?
A.
employee empowement
B.
strong job specialization
C.
supplies received as needed throughout the day
D.
reduced setup time
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【单选题】which one in the following is the primary(首要的) requirement of a control system?
A.
accuracy
B.
stability
C.
swiftness
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B.
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【单选题】Which is NOT mentioned as one of the requirement of exchange students?
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【判断题】One requirement of a fixed order quantity system is that the inventory must be constantly monitored.
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【单选题】which one of the following is not a requirement of just-in-time systems?
A.
employee empowement
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strong job specialization
C.
supplies received as needed throughout the day
D.
reduced setup time
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A.
accuracy
B.
stability
C.
swiftness
查看完整题目与答案