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【单选题】
下列哪个说法是正确的( )。
A.
广角镜头不 能拍摄到较大面积的景物。
B.
长焦镜头的焦距长,视角较小,并且长焦镜头产生的畸变小、景深小,可以轻松实现虚化效果 。
C.
镜头在使用和运输上变焦镜头方便。
D.
变焦镜头还是镜头使用时可以随意选择。
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参考答案:
举一反三
【多选题】网络客户服务的优势有哪些
A.
降低成本
B.
提高效率
C.
促进服务手段多样化
D.
主动性低
【判断题】第一心音标志心室收缩开始,心室收缩力增强则第一心音加强。
A.
正确
B.
错误
【单选题】It was in the small house was built with stones by his father he spent his childhood.
A.
it; that
B.
that; where
C.
that; that
D.
that; which
【单选题】It was in the small house was destroyed by the flood he spent his childhood.
A.
which; that
B.
that; where
C.
which; which
D.
that; which
【简答题】直线y=2x-6与x轴交点坐标为______.
【单选题】It was in the small house ___ was built with stones by his father ___he spent his  childhood .
A.
which , that
B.
that , where
C.
which , which
D.
that , which
【多选题】网络客户服务的优势有 ( )
A.
多样性
B.
智能性
C.
集成性
D.
主动性
【判断题】关于服装,远看看色彩,中距离看款式,再近则要看面料和缝制的细节
A.
正确
B.
错误
【单选题】伴有支气管痉挛的呼吸道感染者宜选用
A.
诺氟沙星
B.
氧氟沙星
C.
环丙沙星
D.
培氟沙星
E.
依诺沙星
【简答题】直线y=3x-6与x轴的交点坐标为______.
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