题目内容
通常城市中压配电电压为______kV。
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boycotts cash against documents Chamber of Commerce circumstances claim compensate documents against payment expired load major merchandise minor modification quotas rebate refund reject storage transit truckllorry void Exporters have to know about trade restrictions, such as federal or governmental ______ and ______
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当同一路径电缆根数不多，且不超过6根时，在城市人行道下或城市郊区等不易经常开挖的地段，宜采用______。
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