选择题：The old man went to the information center soon af

题目内容：

The old man went to the information center soon after his arrival as the city
so much.
A.is changing
B.changes
C. had changed
D.has changed

参考答案：

[填空题,9分] 一只四输入端或非门，使其输出为1的输入变量取值组合有()种

分类：专升本英语题型：选择题

有一个或非门构成的SR锁存器，欲使该锁存器保持原态即Q*=Q,则输入信号应为（）A.S＝R＝0B.S＝R＝1C.S＝1，R＝0D.S＝0，R＝1

分类：专升本英语题型：选择题

When the old man got home,he found his window open,but he didn.t find anybeing s

分类：专升本英语题型：选择题

After the busy day I.ve had,I need adrink.B.strongC.sharpD. powerfulA. heavy

分类：专升本英语题型：选择题

[多选题,10分] 有符号位二进制数的原码为（11101），则对应的十进制不是（）A.-29B.29C.-13D.13

分类：专升本英语题型：选择题