His parents make her at night. [ ]
A. stay at home
B. stays at home
C. to stay at home
答案:A
文氏电桥振荡器必须具有正反馈回路,才能满足起振条件,同时还必须具有负反馈回路,目的是扩展通频带。
科目汇总表账务处理程序的特点是( )。
A.根据记账凭证直接登记总分类账
B.根据科目汇总表登记总分类账
C.根据汇总记账凭证登记总分类账
D.根据记账凭证逐笔登记日记总账