[多选] 供应链管理中渠道结构的影响因素主要有（）。

You are under sail and overtaking a tug and tow.Which action is correct（）. The power-driven tug must maneuver to avoid collision。 You must maneuver to avoid the tug and tow。 You must maneuver to avoid collision only if the tug is to leeward and the wind is on your port side。 Both vessels are required to maneuver to avoid collisio。 RADSS型母差保护屏上有哪些信号？ In a diesel engine, when the fuel is injected into the cylinder,（） the piston is just coming upward from the bottom dead center。 the piston has moved about one-fifth of the way up。 the piston has moved most of the way up and almost reached the TDC。 the piston has just past the TDC。 Telnet服务器起什么作用（）。 它是一个新闻组服务器。 它是一个聊天服务器。 它是一个远程登录服务器。 它是一般常用的服务器。 RADSS母线差动保护如何加用和停用？ 供应链管理中渠道结构的影响因素主要有（）。