单项选择题
A.thirsty B.sick or injured C.wet D.awake
Diesel fuel is relatively safe to handle due to its low...
单项选择题Diesel fuel is relatively safe to handle due to its low volatility, but the fumes will self-ignite and continue to burn steadily if the fuel is heated to the （）.
A.flash point B.auto-ignition point C.volatility point D.upper explosive limit
If the buoyant force on a ships hull is equal to or gre...
单项选择题If the buoyant force on a ships hull is equal to or greater than the displacement tonnage, the ship will （）.
A.require ballast added to only the port side tanks B.be down by the head C.sink D.float
When fighting an electrical fire, you should first （）.A...
单项选择题When fighting an electrical fire, you should first （）.
A.stop ventilation to the area B.stop the vessel C.secure electricity to the circuit D.apply CO2 to the fire
