单项选择题
The purpose of a bilge well is to（）.
A.afford access to the shell through the double bottoms B.collect water to be pumped out C.provide access for the pneumercator D.provide a base line for sounding measurements
单项选择题 The portable radio apparatus means（）.
单项选择题 The most common type of davit found on merchant vessels today is the（）.
单项选择题 The holding capability of an anchor is primarily determined by the（）.
