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【单选题】
由于静电场的尖端效应，一般工件的凸出部分和边角的涂膜( )，而凹进部分由于电场屏蔽形成涂膜( )。
A.
比较厚，较薄甚至涂不上漆
B.
较薄甚至涂不上漆，比较厚
C.
比较厚，更厚
D.
较薄，涂不上漆
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参考答案：
举一反三
【单选题】Questions 62 to 66 are based on the following passage. If a mother pushes her small son in a swing (秋千), giving only a light force each time he returns, eventually he will be swingirg.quite high. The ...
A.
the speed of a motor in revolutions
B.
the frequency at which a motor vibrates
C.
the amplitude of an engine that oscillates
D.
the changes in a dial within a ear engine
相关题目：
【单选题】Questions 62 to 66 are based on the following passage. If a mother pushes her small son in a swing (秋千), giving only a light force each time he returns, eventually he will be swingirg.quite high. The ...
A.
the speed of a motor in revolutions
B.
the frequency at which a motor vibrates
C.
the amplitude of an engine that oscillates
D.
the changes in a dial within a ear engine
参考解析：
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