发达国家的商业银行很注重借款人的()评价,并作为信贷五C原则的第一条。
A.环境
B.担保
C.品质
D.能力
参考答案:C
A house may serve many purposes, but its main __________ is to provide shelter. [ ]
A. rank
B. approach
C. function
D. theme
简述负反馈对放大器的影响。