【简答题】进入地下建筑内部侦察后,内部侦察小组在与外界保持联络的时间间隔最多不能超过______分钟。
【单选题】A/An ______ speaker often becomes the center of a conversation and gains wide acceptance and respect.
【简答题】英译汉: The container has gained wide acceptance in the international movement of manufactured goods.
【简答题】Why has inkjet printing gained wide acceptance by consumers in the printing industry?
【简答题】有哪些方法可以选择出自己感兴趣的研究课题?