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【简答题】
的依据是干扰的变化,检测的信号是干扰量的大小,控制作用的发生时间是在干扰作用的瞬间而不需等到偏差出现之后。
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举一反三
【单选题】Try to get to know the function of each part. The mirror is ___
A.
the reflective device for the digital single lens camera. It is used to correct the reverse pictures on the focusing screen, so that operator can frame and focus correctly.
B.
used to reflect pictures captured by lens to upper pentaprism. (When the photographer presses the shutter, the mirror will bounce and the shutter curtain will bounce too, so that the inside sensor can sense the light and record the picture.)
C.
equivalent to an ideal film plane. Distance from the mirror to the focusing screen is equal to the distance from the mirror to the film plane.
【简答题】分析解放电源系中的他励回路、自励回路、充电回路和充电指示灯回路。
【简答题】简述兴奋和兴奋性的区别与联系
【单选题】行为人超越代理权以被代理人名义订立的合同,相对人可以催告被代理人予以追认。被代理人未作表示的视为
A.
合同无效
B.
有效合同
C.
可撤销合同
D.
效力待定合同
【单选题】行为人超越代理权以被代理人名义订立的合同,相对人可以催告被代理人予以追认。被代理人未作表示的视为()
A.
合同无效
B.
合同有效
C.
合同效力待定
D.
该合同由被代理人承担责任
【单选题】行为人超越代理权以被代理人名义订立的合同,相对人可以催告被代理人予以追认。被代理人未作表示的视为(    )。
A.
合同无效    
B.
合同有效
C.
合同效力未定    
D.
该合同由被代理人承担责任
【单选题】Try to get to know the function of each part. The shutter is ___
A.
an opaque piece of metal or plastic inside your camera that prevents light from reaching the film or digital sensor. The shutter is opened, or released, by the shutter release button.
B.
the reflective device for the digital single lens camera. It is used to correct the reverse pictures on the focusing screen, so that operator can frame and focus correctly.
C.
equivalent to an ideal film plane. Distance from the mirror to the focusing screen is equal to the distance from the mirror to the film plane.
【单选题】行为人超越代理权以被代理人名义订立的合同,相对人可以催告被代理人予以追认。被代理人未作表示的视为:
A.
合同无效。
B.
合同有效。
C.
效力待定。
D.
合同由被代理人承担责任。
【判断题】负载作星形联接时,必有线电流等于相电流
A.
正确
B.
错误
【判断题】负载作星形联接时,必有线电流等于相电流。
A.
正确
B.
错误
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