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搜题
【单选题】
光色的三原色，混合后有何效果（）A.
红、黄、蓝混合越来越暗
B.
红、绿、蓝混合越来越亮
C.
红、蓝、紫混合越来越亮
D.
红、橙、蓝混合越来越亮
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反馈参考答案：
举一反三
【判断题】进行定位控制时，目标位置的指定，可以用两种方式：一是指定当前位置到目标位置的位移量；另一种是直接指定目标位置对于原点的坐标值，PLC根据当前位置信息自动计算目标位置的位移量，实现定位控制。前者为相对驱动方式，后者为绝对驱动方式。
A.
正确
B.
错误
【判断题】进行定位控制时,目标位置的指定,可以用两种方式:一是指定当前位置到目标位置的位移量;另一种是直接指定目标位置对于原点的坐标值,PLC根据当前位置信息自动计算目标位置的位移量,实现定位控制。前者为相对驱动方式,后者为绝对驱动方式。
A.
正确
B.
错误
【简答题】介绍、名片、电话礼仪 习题-填空题.doc
【简答题】Benin is one of the smallest African states. It lies in West Africa on the Gulf (海湾) of Guinea, to the south of Burkina Faso and Niger, between Togo on the west and Nigeria on the east. Benin used to ...
【简答题】A．Cameroon is in West Africa. B．Cameroon is divided by three religions which compete for the loyalty of the 8 million people. C．Cameroon has developed a strong economy in the past 10 years. D．Religiou...
【简答题】Botswana lies immediately to the north of South Africa. It is bordered on the north and west by Namibia, on the north and east by Zimbabwe, and is connected by a narrow strip of land on the northern b...
【单选题】Liberia, the oldest independent Negro state in West Africa, has been struggling for survival ever since its foundation in 1822. Progress has been hampered by constant hostility between tile American N...
A.
a trade surplus
B.
finances
C.
loans to other countries
D.
suspicious neighbors
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