视频的播放只能通过电视机、录像机等硬件设备来实现。
模具的耐用度与哪些因素有关？
（） provides the head or pressure to supply the domestic water where required. ["The compressed air","The compressing air","The transfer pump","The head tank"]
The damage to a vessel is over $25，000. Who must notify the nearest Coast Guard Marine Safety or Marine Inspection Office as soon as possible? （） ["The owner of the vessel","The Master of the vessel","The person in charge of the vessel at the time of casualty","Any one of the above"]
什么是定额水平？
公安民警在什么时间和场合下可以不敬礼？
