什么时候启动“贴现/转贴现到期收回”交易？
Which emergency equipment should you keep near the towing bitts（）. ["A self-contained breathing apparatus","A boat hook and a spanner wrench","A fire ax and\/or cutting torch","A Stokes litter basket"]
In the navigation, cause the shafting over load most easily（） ["stopping the main engine suddenly","changing the main engine running direction suddenly","the sailing from the shallow water area to the deep water area","the ship’s trim too much"]
什么时候启动“受理贴现及转贴现”交易？
关于帧中继叙述正确的是（） ["费用高","传输速率低","计费方式不灵活","吞吐量大"]
相对于定压运行，机组滑压运行有哪些优缺点？
