A tide is called diurnal when（）.

The circulation around a low pressure center in the Northern Hemisphere is（）.

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（）.

The helm command PORT TWENTY means（）.

Your vessel is docking, but not yet alongside. Which line will be the most useful when maneuvering the vessel alongside the pier?（）.

According to the relevant regulation, lifeboat should be powered by（）.

ECDIS must be able to perform all of the following EXCEPT（）.

Shipboard Emergency Drills must be carried out at least（）on board cargo ship.

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

How long are you prohibited to consume alcohol prior to serving as a member of a watch?（）