单项选择题
The two points that act together to trim a ship are the（）.
A.LCF and LCB B.LCG and LCB C.metacenter and LCG D.VCG and LCG
单项选择题 The TPC curve，one of the hydrostatic curves in a vessel’s plans，gives the number of tons（）.
单项选择题 The Plimsoll mark on a vessel is used to（）.
单项选择题 The difference between the starboard and port drafts due to wind or seas is called（）.
