“微信扫一扫”进入"可可试卷"微信小程序刷题
空间中两条直线
A.\(l,m\)与\( \alpha \)所成角相等
B.\(l,m\)在\( \alpha \)内的射影分别为\( {l}^{\text{'}},{m}^{\text{'}}\), 且\( {l}^{\text{'}}\)∥\( {m}^{\text{'}}\)
C.\(l\)||\( \alpha , \)\(m\)||\( \alpha \)
D.\(l\bot \alpha \),\(m\bot \alpha \)
参考答案:D