与“寒从中生”关系最密切的两个脏是()。
A.心、肺
B.心、肾
C.脾、肾
D.肝、肾
E.心、脾
参考答案:C
What is the most vulnerable part of the fire main system on board an offshore rig?()
A.The fire pump
B.Exposed hard piping
C.The hydrant valve
D.The fire hose
如果两部ELAC都失效,所有副翼将回到()方式传动
A、阻尼
B、定中