皮皮学，免费搜题
登录
搜题
【单选题】
下列说法中，正确的是( )。A.
调制解调器能将数字信号转换为模拟信号，反之不可
B.
调制解调器用来实现数字信号和模拟信号的转换
C.
调制解调器用来实现模拟信号之间的通信
D.
调制解调器用来实现数字信号之间的通信
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
【单选题】In our highly technological society, the number of jobs for unskilled workers is ______.
A.
shrinking
B.
obscuring
C.
altering
D.
constraining
【单选题】Harry, the secretary of our company, is spoken highly of as he is ___________ at all the office work.
A.
proficient
B.
tentative
C.
empirical
D.
trivial
【简答题】This places our dealers in a highly competitive position and also enables them to enjoy a maximum profit.
【简答题】绘制一副植物生命历程的思维导图
【简答题】按照综合性研究课题的步骤,并在第一次作业的基础上,继续完成分析课题、选择合适的检索方式、确定检索信息源、实际检索与调整、获取原始文献(途经)部分。总分:(100分)
【简答题】______ as planned, our work was highly thought of. A．Completed B．Completing C．Having completed D．To be completed
【单选题】Our literacy skills need to be as highly developed as they were in the past.
A.
YES
B.
NO
C.
NOT GIVEN
相关题目：