题目内容
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[判断题]
The –48V ground cable is in yellow/green. The PGND cable is black. These two cables ca
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A.disgusting
B.banging
C.grabbing
D.blasting
A.-48V,-60V~-30V
B.-48V,-57V~-40V
C.+48V,-60V~-30V
D.+48V,-57V~-40V
A.36V、24V、12V、6V
B.48V、24V、12V、6V
C.48V、36V、24V、12V
D.55V、48V、24V、12V
A. cooled to appropriate temperature
B. warmed up gradually to appropriate temperature
C. opened up and renewed
D. ground and polished