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【单选题】
根据《中国移动900/1800MHzTDMA数字蜂窝移动通信无线网工程验收规范》，市电引入一般采用（），具有独立变压器的基站低压交流供电系统应采用三相五线制接线方式。A.
交流三相四线铠装电力电缆
B.
三相三线
C.
两相三线
D.
一相两线
拍照语音搜题，微信中搜索"皮皮学"使用
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【单选题】The man behind this notion, Jack Maple, is a dandy who affects dark glasses, homburgs(翘边帽)and two-toe shoes yet he has become something of a legend in America's police departments. For some years, sta...
A.
Philadelphia
B.
Oregon
C.
New Orleans
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New York
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