问题 填空题

为图19-3中(2)~(6)处选择对应的设备名称,填入解答栏内。
备选设备:CMTS、以太网交换机、光收发器、光电转换节点、Cable Modem。

答案

参考答案:Cable Modem

问答题

读图,分析回答:

(1)从图中提供的信息分析,舟山渔场发展海洋渔业的有利条件。

                                                                                                                                                              

                                                                                                                                                              

(2)结合已学的气候和地形知识分析:A(长芦盐场)、B(布袋盐场)两个盐场的成因有什么不同?

                                                                                                                                                              

                                                                                                                                                              

(3)盐是制碱的原料,请说说天津发展制碱的有利条件吗?

                                                                                                                                                              

                                                                                                                                                               

单项选择题