信号劣化
参考答案：
指信号已经劣化至超过预定限值的情况。
下列税费中计入建筑安装工程费的是( )。
A．企业所得税 B．银行财务费C．城市维护建设税 D．增值税
24. The girl was determined to marry the young man she fell in love with, _______ her parents’ disagreement.
A. by means of B regardless of C. due to D. in favour of
