Before any loading takes place any signs of the previous cargo should do（）.

When steering by autopilot,how often should the steering be checked?（）

Bales close to the deckhead should be covered to prevent（）.

Which of the following shall not the officers in charge of the navigational watch do?（）

Which wind results from a land mass cooling more quickly at night than an adjacent water area?（）

Despite the rising importance and great convenience of the gyrocompass,the magnetic compass still retain its importance because of its（）.

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

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

In the Northern hemisphere northerly winds may cause temperature（）.

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