感性负载(或电抗器)之前并联一个二极管,其作用是( )。
A.防止负载开路
B.防止负载过电流
C.保证负载正常工作
D.保证了晶闸管的正常工作
参考答案:D
下列属于工程项目建设投资的有()。
A.建设期利息
B.设备及工器具购置费
C.预备费
D.流动资产投资
E.工程建设其他费
Of all the 18th-century novelists ______ was the first to set out, both in theory and practice, to write specially a "comic epic in prose. "
A. Henry Fielding B. Daniel DefoeC. Jonathan Swift D. John Bunyan