【单选题】给你以下并联监控调压装置的设定参数,3000Pa、3300Pa、4500Pa、5000Pa,主路切断压力应取( )。
【单选题】正压送风机启动后,防排烟楼梯间风压为( )。
【单选题】小概率事件是指 (P 是随机事件发生的概率 )
【判断题】小概率事件是指P≤5%的随机事件。( )
【单选题】Obviously, the word 'arrangement' underlined in the third paragraph refers to the fact that ______.
A.
he was arranged to speak about his involvement
B.
a campaign was under way to promote the administration
C.
he was paid for speaking on NCLB developments
D.
some critics made an arrangement to criticize him
【单选题】当三基色信号的强度相等R=G=B时,屏幕呈现颜色为
【单选题】What does Frost mean when he says in the poem that “The fact is the sweetest dream that labor knows”?
A.
It is only labor that can make a dream a sweet fact.
B.
It is only “the sweetest dream” that can become a fact.
C.
It is only fact that can become “the sweetest dream.”
D.
It is only through labor that “the sweetest dream” can come true or become a fact.
【单选题】当三色基信号的强度相等R = G = B时,屏幕呈现的颜色为( )。