【单选题】为了防止发生误车事故,导游人员应带团提前( )到达火车站。P252
【简答题】The book tells ______ life story of John Smith, who left ______ school and worked for a newspaper at the age of 16. A) the, the B) a, the C) the, / D) a, /
【简答题】两片74LS161级联如下图所示。该电路实现( )进制计数器。【图片】
【简答题】两片 74LS161 级联如下图所示。该电路实现( )进制计数器。
【简答题】两片 74LS161 级联如下图所示。该电路实现( )进制计数器。 若初始状态是 0000 0000 ,经过 21 个脉冲后,输出状态为( )。
【单选题】两片 74LS161 级联如下图所示。该电路实现( )进制计数器。
【简答题】This book tells _______ life story of John Smith, who left _______ school and worked for a newspaper at the age of 16. A.the; the B.a; the C.the; / D.a; /
【判断题】两片 74LS161 级联如下图所示。该电路实现 256 进制计数器。
【单选题】This book tells ____ life story of John Smith, who left ____ school and worked for a newspaper at the age of 16.