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【单选题】
在 PID 调节中,比例作用是依据( )来动作A.
偏差的大小
B.
偏差是否存在
C.
偏差变化方向
D.
偏差变化速度
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【单选题】According to Paragraph 3, the newest group of singles are ______.
A.
warm and light hearted
B.
on either side of marriage
C.
negative and gloomy
D.
healthy and wealthy
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【简答题】Gifts tighten personal relationships and provide a means of communication between loved ones. People say that a gift lets the recipient（接受者） know we are thinking of them, and that we want to make the ...
【简答题】With the development of the newest form. of transportation, the towns in America are usually connected to the small plane airports by ______.
【简答题】Bill ,Frank and Dave were brothers. Every year, they sent their mother expensive gifts on her birthday .They liked to show her how rich and successful they were. The eldest brother ,Bill, had a lot of...
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