【单选题】根据铁碳合金相图可知,在ECF线上,会发生 。
【单选题】When your vessel is proceeding to congested waters, ( ) is used to determine the exact ranges of other ships or objects in the vicinity.
【单选题】When your vessel is on or near the path of an approaching tropical storm the().
A.
wind direction remains steady
【简答题】( )创建了我国第一所公立幼稚师范学校——江西省立实验幼师。
【单选题】铁碳合金相图上的共析线是( )线,共晶线是ECF线。
【单选题】When your vessel is proceeding to the area of traffic density,()is used to determine the exact ranges of other ships or objects in the vicinity.
【单选题】When your vessel is proceeding to the area of traffic density,______ is used to determine the exact ranges of other ships or objects in the vicinity.