单项选择题
The agency which assigns loadlines and issues Loadline Certificates in US is the （）.
A.American Bureau of Shipping B.Secretary of Commerce C.US Customs D.USCG
单项选择题 The Certificate of Freeboard is the （）.
单项选择题 The loadline certificate of a Chinese ship is issued by （）.
单项选择题 The maximum draft to which a vessel can legally be submerged is indicated by the （）.
