单项选择题
A.The size of rooms and other accommodation spaces
B.communication
C.Heating and ventilation
D.Noise and vibration and other ambient factors
单项选择题 When anchoring,it is a common rule of thumb to use a length of chain（）.
单项选择题 The term lee side refers to the（）.
单项选择题 Notwithstanding the provisions of this regulation, the segregated ballast conditions for oil tankers less than 150 meters in length shall be to the（）of the Administration.