【单选题】如图正方体 ABCD-A 1 B 1 C 1 D 1 中, BC 1 与 B 1 D 1 所成的角为()
【多选题】某项经济业务的发生没有影响所有者权益,则可能导致( )
【单选题】We have to investigate as _________ customers as possible in order to make sure of the potential of the market.
【单选题】We consider ______ he should have left without telling anyone beforehand.
【单选题】We learn from Paragraph 2 that outside directors are supposed to be______.
C.
share price forecasters
【简答题】如图,在正方体ABCD-A 1 B 1 C 1 D 1 中,求证:平面A 1 BD ∥平面CB 1 D 1 .
【简答题】如图, 在正方体ABCD—A 1 B 1 C 1 D 1 中,E,F分别是正方形A 1 B 1 C 1 D 1 和ADD 1 A 1 的中心,则EF和BD所成的角是 。
【单选题】Ten minutes earlier, ______ we could not have been a aught in the heavy rain.
【简答题】如图,在正方体ABCD-A 1 B 1 C 1 D 1 中,求证:平面A 1 BD∥平面CD 1 B 1 .
【单选题】如图:已知正方体ABCD-A1B1C1D1中,E为棱CC1的中点.如果一只蜜蜂在正方体ABC-A1B1C1D1内部任意飞,则它飞入三棱锥A1-BDE内部的概率为( )