工作间断时，工作班人员应从工作现场撤出，所有（）可保持不变；但复工前应派人检查，确认安全措施完备后，方可开始工作。
查看答案
Which of the following commands should be used to show how much data is read from or written to a particular logical volume， given there are several other logical volumes on the same disk？（）
A. sar
B. lslv
C. iostat
D. filemo
磁感应强度的单位为特斯拉T。
A. 正确
B. 错误
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