What is it called when it is possible to ignite the vapour above the oil?（）

Which of the following is not an operation mode of AIS?（）

The loading of the ship must be done in accordance with（）.

When the wave period and the apparent rolling period are the same（）.

Full details of all lights and fog signals are shown on（）.

（）is halfway between the forward and after perpendiculars and is reference point for vessel construction.

The company should establish and maintain procedures to control all documents and date which are relevant to（）.

（）is on the panel of radar.

The force resulting from the earth’s rotation that causes winds to deflect to the right in the Northern Hemisphere and to the left in the Southern Hemisphere is called（）.

A tide is called diurnal when（）.