Where in the tank shall the oxygen level be determined before crude oil washing?

题库:船长 类型:最佳选择题 时间:2019-02-14 17:22:46 免费下载:《甲类船长英语考证》Word试卷

Where in the tank shall the oxygen level be determined before crude oil washing?
A.1 meter from the deck and in thebottom of the tank
B.In the middle of the tank
C.1 meter from the deck and in themiddle region of the ullage space
D.2 meter from the deck and in themiddle region of the ullage space

本题关键词:BE值;