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

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

（）is on the panel of radar.

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

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

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

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

What is a CORRECT reply to a pilot’s request, How’s your heading?（）

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

Fog is likely to occur when there is little difference between the dew point and the（）.