题目内容：
15. (判断题) 调节视频展示台的光圈大小的主要作用是调整投影至银幕上的影像大小。( )(本题1.0分)A、 正确
B、 错误
参考答案：
选择题：15. (判断题) 调节视频展示台的光圈大小的主要作用是调整投影至银幕上的影像大小。( )(本题1.
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A、 正确
B、 错误
A、 正确
B、 错误
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In hyponymy the term which denotes something general is （） and the term which co
Rousseau published two books that electrified Euro
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Compounds are different from free phrases in _____
Compounds are different from free phrases in ___________ unit.
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