已知:某泵Q=70m3/h,H=65.84m,铭牌功率为18.2KW,求①有效功率Ne,②效率η。
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Which four services use the inner labels of an MPLS label stack? ()
A. MPLS VPN
B. switching path in MPLS core
Cisco MPLS Traffic Engineering and Fast Reroute
D. MPLS over ATM
E. VPN over Traffic Engineering core
F. any transport over MPLS
垄断厂商是价格的制定者,这是否意味着可以任意定价?