A.長(zhǎng)數(shù)向短數(shù)傳送時(shí),忽略長(zhǎng)數(shù)的高位
B.長(zhǎng)數(shù)向短數(shù)傳送時(shí),忽略長(zhǎng)數(shù)的低位
C.短數(shù)向長(zhǎng)數(shù)傳送時(shí),長(zhǎng)數(shù)的高位為0
D.短數(shù)向長(zhǎng)數(shù)傳送時(shí),長(zhǎng)數(shù)的高位為1
E.短數(shù)向長(zhǎng)數(shù)傳送時(shí),長(zhǎng)數(shù)的高位不變