A customer is building a database server, and the server does sequential write most of the time. They are planning to use an IBM x445 and a ServeRAID-6M adapter. Which of the following fault tolerant RAID levels will perform best for sequential write?()
A. RAID-5 with cache write back
B. RAID-1E with cache write back
C. RAID-10 with cache write thru
D. RAID-50 with cache write thru
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采用保护接地后,人触及漏电设备外壳时,人体电阻与接地装置电阻是并联联接。
A. 正确
B. 错误
据《2000通则》,如CIF合同未明确规定投保险别,我出口商应投保一切险。
A. 正确
B. 错误
SS4型电力机车在低压试验的劈相机试验中,按下1DYJ则PXZJ吸合后,延时()后QRC释放。
A. lS
B. 1.5S
C. 2S
D. 3s