单项选择题
When flammable liquids are handled in a compartment on a vessel，the ventilation for that area should be（）.
A.operated continuously while vapors may be present B.operated intermittently to remove vapors C.available on standby for immediate use D.shut down if an explosive mixture is present
单项选择题 What entry on a dangerous cargo manifest concerning the classification of a cargo is correct? （）
单项选择题 We will（）special attention to the dangerous cargo.
单项选择题 Vessels carrying（）must not willfully wash decks or holds.
