【单选题】已知两条直线m,n,两个平面α,β,给出4个命题: ①若m⊥α,m?β,则β⊥α; ②若α ∥ β,m ∥ n,m⊥α,则n⊥β; ③若α∩β=n,且m ∥ α,m ∥ β,则m ∥ n; ④若m ∥ α,n ∥ β,m⊥n,则α ∥ β. 其中正确命题的个数为( )
【单选题】We all think highly of the important part Wang Zhizhi ___________ in this match.
【单选题】对因降低安全生产条件导致事故发生的施工单位,有关部门可依法对其处以()的处罚。
【单选题】What do you think of his suggestion we all attend the meeting.
【单选题】在现代计算机阶段人们把______年出现的计算机称为第三代计算机时代,其硬件的电子器件为集成电路。
【单选题】Speaking of basic sentence structures we may think of all of the following except ________.
D.
compound-complex sentences
【单选题】在现代计算机阶段人们把______年出现的计算机称为第三代计算机时代,其硬件的电子器件为集成电路。
【单选题】建设主管部门应当依照有关法律法规的规定,对因降低安全生产条件导致事故发生的施工单位给予( )的处罚。
【单选题】已知数列1,—2,0,6,—4其中负数出现的概率是
【简答题】When we think of green buildings, we tend to think of new ones-the kind of modern, solar-paneled pieces that make the covers of architecture magazines.But the US has more than 100 million existi...