A.The control equipment B.The power unit C.The transmission system D.The follow-up mechanism
A.without the necessity of manually adjusting the lines B.without the necessity of automatically adjusting the lines C.with the necessity of manually adjusting the lines D.with the un-necessity of automatically adjusting the lines
A.The large-tension mooring B.The small-tension mooring C.The variable-tension mooring D.The constant-tension mooring