TD-SCDMA系统中,为支持HSDPA下行采用()的调制方式。
A.QPSK
B.8PSK
C.16PSK
D.16QAM
参考答案:D
Read and judge. (读对话,判断正误,用“T”或“F”表示)
Zoom: It's warm today.
Zip: Let's go to the farm.
Zoom: Great!
Zip: Wow! This farm is so big.
Zoom: What are these?
Zip: They are cucumbers.
Zoom: I like cucumbers. They are fresh.
Zip: Are these horses?
Zoom: No, they aren't. They are donkeys.
( )1. It's hot today.
( )2. Zip likes cucumbers.
( )3. The farm is very big.
( )4. Zoom likes to go to the farm.
日月贝的特征是左壳为()。
A、淡褐红色
B、淡紫色
C、浓褐色
D、大红色