A.其他三項都對 B.判斷脈沖是否正常 C.DM和GM能否正常工作 D.井下數(shù)據(jù)和地面數(shù)據(jù)是否一致
A.2V B.3V C.1.5V D.0.5V
A.3.75MA B.6MA C.1.5MA D.0.5MA