What is the（）of the turning circle in mavoeuvring?

Which radiotelephone signal indicates receipt of a distress message?（）

When testing a Class A EPIRB you will know the EPIRB is working properly if you hear on 99.5 Mhz FM or any vacant frequency on a nearby AM radio（）.

Fog forms when the air（）.

What is the primary purpose of a splint applied in first aid?（）

To develop maximum anchor holding power，the optimum angle between the anchor’s shank and the mooring lines is（）.

Tripping defects in anchors frequently occur in（）.

The expression DROP ANCHOR means（）.

The term OIL as used in the Oil Pollution Regulations means（）.

The radiotelephone safety message urgently concerned with safety of a person would be prefixed by the word（）.