单项选择题
The major components which determine the length of a catenary in a deployed anchor cable are water depth，cable weight，and（）.
A.cable tension B.water temperature C.bottom conditions D.water density
单项选择题 The litter on a ship must be able to（）.
单项选择题 The lifesaving signal indicating You are seen - assistance will be given as soon as possible is the（）.
单项选择题 The holding power of an anchor is the（）.
