单项选择题
A320有几个余油排放valve可以排放水份()A.2个B.3个C.5个D.6个
单项选择题A320有几个余油排放valve可以排放水份()
Living by hunting and reindeer herding, the Evenki are ...
判断题Living by hunting and reindeer herding, the Evenki are the last hunting people living in China now.
APU低压valve有几个马达()A.一个直流马达B.两个直流马达C.一个直流马达和一个交流马达
单项选择题APU低压valve有几个马达()