题目6多选题
传递函数<img src="https://tihai-oss-cloud.itihey.com/img/7a731e84c11deb63f883818374ef2ddb.webp">的特征方程是指( )A. <img src="https://tihai-oss-cloud.itihey.com/img/c9c34521a8122ab3ee18a805e3f5a3ad.webp">B. <img src="https://tihai-oss-cloud.itihey.com/img/085424726d21336ebcabc3a7a7c65660.webp">C. <img src="https://tihai-oss-cloud.itihey.com/img/04b0023094a1baf32105ad83164616be.webp">,<img src="https://tihai-oss-cloud.itihey.com/img/7ad5e0edf1a107ecf1059cc4bc92a68e.webp">D. <img src="https://tihai-oss-cloud.itihey.com/img/532910fd793126866de6842ee530f44e.webp">