发报台分别以概率 0.6 和 0.4 发出信号“ 1”和“ 0”。由于通讯系统受到干扰，当发出信号“ 1”时，收报台未必收到信号“ 1”，而是分别以概率 0.8 和 0.2 收到信号“ 1”和“0”；同时，当发出信号“ 0”时，收报台分别以概率 0.9 和 0.1 收到信号“ 0”和“ 1”。求
（1）收报台收到信号“ 1”的概率；
（2）当收报台收到信号“ 1”时，发报台确是发出信号“ 1”的概率。
暂无解析
老年人合法权益受到侵害的，被侵害人或者其代理人有权要求有关部门处理，这属于老年人合法权益保障方式中的()。
My train arrive in New York at eight o'clock tonight. The plane I would like to take from there ______by then.
There were many more people who got injured in the big fire than _______.
_____ their real economic situations, they got some relief fund from the government.
This robot is supposed to save a lot of labor, but it remains a problem if it ______.
