若浮點數(shù)的階碼用移碼表示,尾數(shù)用補碼表示。兩規(guī)格化浮點數(shù)相乘,最后對結(jié)果規(guī)格化時,有規(guī)的右移位數(shù)最多為()位。A.1B.2C.尾數(shù)位數(shù)D.尾數(shù)位數(shù)-1