当线圈中的电流()时,线圈两端产生自感电动势。
A、变化时
B、不变时
C、很大时
D、很小时
参考答案:A
Which combination of interest rate options most likely has the same pattern of payoffs as the short position in a forward rate agreement Interest rate call option Interest rate put option()①A. Long Long ②B. Long Short ③C. Short Long
A. ①
B. ②
C. ③
SQL 的数据操作语句不包括______。
A.INSERT
B.UPDATE
C.DELETE
D.CHANGE