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【多选题】
有机合成中合成子的分类有哪些?A.
离子合成子
B.
自由基合成子
C.
反应合成子
D.
烷基合成子
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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】PART 3 Discussion topic: Media Example questions — How do most people in your country get the news? — Compare newspapers and TV as news sources. — Do you think that the different media (newspapers, TV...
【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。
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