单项选择题
As seen from the tow，what should connect the leading ends of both towing bridle legs to the main towing hawser?（）
A.A cable clamp B.A fishplate，flounder，or towing plate C.A pad eye D.The towing bitts
单项选择题 As it approaches，a typical warm front will bring（）.
单项选择题 As defined in the regulations governing marine casualties a “marine employer” may be the（）.
单项选择题 As compared to carbon dioxide，dry chemical has which advantage?（）
