问题:若随机信号x(t)、y(t)的均值都为零,当τ→∞时,它们的互相关函数Rxy(τ)=()。
Wednesday, October 11, 2023
Saturday, December 23, 2023
问题:陶瓷生产中的泥料水分含量测试一般采用哪类传感器()A、霍尔传感器B、光电传感器C、电容式传感器D、热电偶
Wednesday, March 20, 2024
问题:汽车上的磁致伸缩式爆震传感器,属于()类型传感器。A、光电式B、电容式C、变磁阻式D、压电式
Wednesday, October 11, 2023
Saturday, September 16, 2023
Sunday, October 1, 2023
问题:周期信号的频谱描述错误的是()A、连续的B、离散的C、基频的整数倍D、衰减性
Wednesday, November 8, 2023
Saturday, September 16, 2023
Sunday, November 5, 2023
问题:傅里叶变换是()之间的桥梁,而拉氏变换是()之间的桥梁。
Sunday, November 19, 2023
Wednesday, March 20, 2024
Tuesday, April 23, 2024
Wednesday, November 8, 2023
问题:属于传感器动态特性指标的是()A、重复性B、线性度C、灵敏度D、带宽
Sunday, October 1, 2023
Sunday, November 19, 2023
问题:时域信号连续压缩,则频域中高频成份()。A、不变B、减少C、增加D、不定
Thursday, July 27, 2023
Wednesday, October 11, 2023
Thursday, July 27, 2023
Sunday, November 5, 2023
Thursday, February 23, 2023