STM-1长距光口接收灵敏度指标为-34dBm,STM-4长距光口灵敏度为()。
参考答案:-28dBm
Can you hear _______ just now? It’s too noisy outside.
A. what did he say B. what he says C. what he said
工程量清单计价可以使用单价合同和总价合同形式,而"08清单规范"建议采用()
A.单价合同
B.总价合同
C.成本加酬金合同
D.以上合同均可