【判断题】开关柜综合测控装置的开关状态有常开和常闭两种。( )
【单选题】某电子双倍的电路板上有一个4位的跳板开关,此开关每一位都只有打开和闭合两种状态,这个跳板总开关最多可以表示的状态数是()
【简答题】A.It should be assimilated thoroughly. B.It should be paraphrased by the author. C.It should be enclosed in quotation marks. D.It should be authorized by the source.
【单选题】两个开关控制一盏灯,用 A 和 B 为 1 表示相应开关为闭合状态,如果只有两个开关都闭合时灯才不亮,则该电路的逻辑关系为( )
【单选题】Why does the author say Google should be hurt the least?
A.
Because Google shows the strongest profit-making trend.
B.
Because Google does search advertising business.
C.
Because search advertising is the only medium outrunning traditional ones.
D.
Because search advertising will attract more investment.
【多选题】下列对出口信贷国家担保制的表述中,正确的有