单项选择题 If a fire ignites in the engine room as a result of a high pressure fuel oil leak, you should FIRST （）.

单项选择题 While reading the muster list, you see that "three short blasts on the ships whistle and the same signal on the general alarm bells" is the signal for （）.

单项选择题 When you hear three short blasts on the ships whistle and the same signal on the general alarm bells, you （）.