职教组卷基于海量职教高考试题库建立的在线组卷及学习系统
职教组卷
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选择章节

  • 题型:选择题 题类:期中考试 难易度:中档

    年份:2018

    如图,在长方体\({ABCD}{-}A_{1}B_{1}C_{1}D_{1}\)中,\({AB}{=}{BC}{=}2\),\(AA_{1}{=}1\),则\(BC_{1}\)与平面\(BB_{1}D_{1}D\)所成角的正弦值为 \((\)     \()\)

    A.\(\dfrac{\sqrt{6}}{3}\) B.\(\dfrac{2\sqrt{6}}{5}\) C.\(\dfrac{\sqrt{15}}{5}\) D.\(\dfrac{\sqrt{10}}{5}\)