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【单选题】
摄像机的光学镜头焦距长度大于像平面对角线的镜头,称为______镜头。A.
长焦距
B.
短焦距
C.
变焦距
D.
定焦距
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举一反三
【单选题】My funny friend ______ me ______. [ ]
A.
makes; to laugh
B.
makes; laughing
C.
makes; laugh
【单选题】在斜导柱侧向分型抽芯机构中，锁紧块的斜角α′与斜导柱的倾角α之间的正确关系式是（）。
A.
α=α′+2~3
B.
α=α′-2~3°
C.
α-α′＜25°
D.
α′-α≤25°
【简答题】Excel2000 文件的扩展名为 。
【单选题】It _____ to me whether you go or not. [ ]
A.
makes no sense
B.
makes no difference
C.
makes sense
D.
makes difference
【单选题】The federal entity created by the Constitution is by far the dominant feature of the American governmental system. (1)_____ the system itself is in reality a mosaic, (2)_____ of thousands of smaller u...
A.
Therefore
B.
ually
C.
But
D.
Presumably
【单选题】Because the United States is not surrounded by many other nations, some Ameri-cans tend to ______ the rest of the world.
A.
ignore
B.
decline
C.
neglect
D.
overlook
【单选题】He always tells funny things to me and _________. [ ]
A.
makes me laughing
B.
makes me laugh
C.
makes me laughs
D.
makes me to laugh
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