题目adj.不用电线与电源相连的;无电线的;无塞绳式的A. caretakerB. circulateC. cordlessD. coreadj.不用电线与电源相连的;无电线的;无塞绳式的A. caretakerB. circulateC. cordlessD. core题目解答答案C. cordless