最早的地税返还模式是（）。 ["西藏模式","鹰潭模式","新疆模式","北京模式"]
火力发电厂使用燃料的原则是什么？
A message by flashing light consists of the call，the identity，the ending，and the（）. ["reply","text","time","answer"]
“How do you read?” “I read you with signal strength one”（）. ["poor","bad","fair","good"]
二战中规模最大的登陆战是哪次登陆战？（） ["诺曼底登陆","马里亚纳海战","塔兰托袭击战"]
委托（合作）开发的管控措施包括哪些？
