皮皮学，免费搜题
登录
搜题
【单选题】
若【图片】若应用离散叶变换式进行叶变换，若采样频率为128.0Hz，N＝1024点，经叶变换后，测试显示结果在幅频曲线中的频率间隔Df＝ Hz。A.
90.0
B.
128.0
C.
38
D.
0.125
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】continuing, or continuing to develop
【单选题】Is Continuing Ed for You? Continuing education is important for everyone now, in all fields. Almost as soon as you've completed a field of study and begun working--new ideas, approaches and techniques...
A.
you have to stay current in your discipline.
B.
new ideas and technologies are to be discussed.
C.
you have just completed your studies.
D.
you are just beginning to work.
【简答题】楼梯详图包括楼梯()详图、楼梯剖面详图和节点详图。
【单选题】Is Continuing Ed for You? Continuing education is important for everyone now, in all fields. Almost as soon as you've completed a field of study and begun working -- new ideas, approaches and techniqu...
A.
you have to stay current in your discipline
B.
new ideas and technologies are to be discussed
C.
you have just completed your studies
D.
you are just beginning to work
相关题目：