单项选择题 It was （）midnight that we removed the trouble and went back to our cabin.

单项选择题 Which of the statements listed concerning heat transfer is correct?（）

单项选择题 Which of the following operations must be entered on the Oil Record Book Part Ⅰ? （） Ⅰ.Routine discharge at sea of bilge water containing oil from the machinery spaces Ⅱ.Bunkering of fuel oil