皮皮学，免费搜题
登录
搜题
【多选题】
下列关于 FM 的相干解调和非相干解调的说法,正确的是A.
AM 信号及 FM 信号的非相干解调都可用到包络检波器
B.
非相干解调不需要提取载波
C.
非相干解调中的限幅器能够消除信道中噪声引起的调频波的幅度起伏
D.
非相干解调可采用鉴频法
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】When we talk about getting online, we mean being connected to the Internet---a giant network of computers that connects people and information all over the world. The Internet has a lot in common with...
【单选题】The Internet allows rural school children about what is happening in the world.
A.
to learn
B.
learning
C.
learn
D.
Learned
【单选题】The Internet allows rural school children about what is happening in the world .
A.
to learn
B.
learning
C.
learn
D.
learned
【单选题】The Internet allows rural school children about what is happening in the world.
A.
to learn
B.
learning
C.
learn
相关题目：