单项选择题
The major components which determine the length of catenary in a deployed anchor cable are water depth，cable tension，and（）.
A.environmental forces B.bottom conditions C.cable weight D.water density
单项选择题 The capacity of any liferaft on board a vessel can be determined by（）.
单项选择题 That the（）showed that the ship complied with the requirements of the said Convention.
单项选择题 Please mark (out) one of the most important register of shipping in the world. （）.
