A、清除數(shù)據(jù)緩沖區(qū)數(shù)據(jù);數(shù)據(jù)問題,更換數(shù)據(jù)
B、清除數(shù)據(jù)緩沖區(qū)數(shù)據(jù);數(shù)據(jù)線接觸問題,更換數(shù)據(jù)線
C、清除數(shù)據(jù)緩沖區(qū)數(shù)據(jù);數(shù)據(jù)線接觸不良,更換數(shù)據(jù)線
D、清除數(shù)據(jù)緩沖區(qū)數(shù)據(jù);數(shù)據(jù)線問題,更換數(shù)據(jù)線