对运输途中的货车，车站认为需要苫盖篷布时，必须经（）批准。
A. 铁路局篷布调度
B. 铁路局行车调度
C. 车站站长
D. 铁道部篷布调度
击跑员为了躲避一垒手触杀，后退跑，被主裁当即判为（）出局。
钢材的韧性好，耐冲击，还可以通过热处理或（）改善其机械性能。
Which statement about SAN port channels configured on Cisco Nexus 5000 Series Switches is true？（）
A single SAN port channel can have both Fibre Channel and virtual Fibre Channel interfaces.
B. SAN port channels can include up to 16 interfaces.
C. SAN port channels distribute traffic across all links in the port channel when source ID and destination ID load balancing are used.
D. The links in SAN port channels can be connected to different sets of switches.
E. The On mode of operation means ports only operate as part of a SAN port channel or remain inactive.
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