当ADIRU1故障时，ADIRU3的数据由（）提供？
A、MMR（多方式接收机）1
B、MMR（多方式接收机）2
参考答案：A
_____ which direction should we go to get to the memorial _____ those who died in the Anti—Japanese War?
A．To; for
B．In; to
C．To; to
D．For; in
呼吸新鲜空气时，COHb的半衰期约为
A．半小时B．2小时C．1小时D．3小时E．4小时
