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刷刷题刷刷变学霸
举一反三
【单选题】Most shoppers know the feeling. You stand in front of piles of organic produce and wonder what those premium prices are buying you over and above what you get from standard foods. Not a lot nutrition-...
A.
do not use naturally produced fertilisers
B.
produce carbon dioxide when removing weeds
C.
use high doses of weed-killer
D.
use too many resources to qualify for organic status
【单选题】当光纤于BBU和AAU连接时,A端连接()。
A.
V9200 VSW虚拟化交换板光接口
B.
核心网光接口
C.
AAU/RRU的光接口
D.
V2900 VBP虚拟化基带板光接口
【单选题】亚龙YL-335A自动化生产线三相步进电动机驱动器的()端子应与西门子S7-200PLC的Q0.2方向端连接。
A.
PLS+
B.
PLS-
C.
DIR+
D.
DIR-