单项选择题
Oil Record Book Part I shall be provided to （）.
A.every oil tanker B.every ship of 400 tons gross tonnage and above C.A and B D.Neither A nor B
单项选择题 Which of the following should be recorded in Oil Record Book Part I (machinery space operation) ?（）
单项选择题 A ruptured diaphragm in a thermostatic expansion valve will cause the valve to （）.
单项选择题 Black smoke coming from a boiler can be caused by （）.
