IIR数字滤波器中直接II型和直接I型相比,直接II型()。
A.所需的存储单元多
B.所需的存储单元少
C.便于时分复用
D.便于频分复用
参考答案:B
--Excuse me, can you tell me _______?
---Sure. There’s a good restaurant on Renmin Road.
A.where I can post letters
B.what movie I can see here
C.if there’s a good place to eat in
D.how I get to the bus station
植物新品种的新颖性