單項選擇題
()meansthataprogramwrittenforonecomputersystemcanbecompiledandrunonanothersystemwithlittleornomodification.
A.Portability
B.Reliability
C.Availability
D.Reusability
()meansthataprogramwrittenforonecomputersystemcanbecompiledandrunonanothersystemwithlittleornomodification.
A.Portability
B.Reliability
C.Availability
D.Reusability
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單項選擇題
三相四線制對稱電源UL1L2=380/60°V接入一個△形聯(lián)結(jié)的對稱負載后,IL1=10/30°A,該消耗的有功功率P=____。
三相四線制對稱電源UL1L2=380/60°V接入一個△形聯(lián)結(jié)的對稱負載后,IL1=10/30°A,該消耗的有功功率P=____。
A.6.6kW
B.3.3kW
C.5.7kW
D.10kW