When visibility is about 1 nautical mi

1、When visibility is reduced to about 5

When visibility is reduced to about 5 miles, we say that visibility is（）.Avery goodBgoodCpoorDmoderate

2、1 nautical mile is the lenth of an arc

1 nautical mile is the lenth of an arc of a great circle which subtends an angel of（）at the center of the Earth.A1degreeB1 minuteC1secondD1.5 degree

3、At 0815，visibility is excellent and yo

At 0815，visibility is excellent and you can see Montauk Point. Montauk Point is（）.Alow and rocky with scattered small pine treesBa low lying wetlandCa high sandy bluffDa flat wooded plai

4、When visibility is 10 nautical miles,

When visibility is 10 nautical miles, we say that visibility is（）.Avery goodBgoodCpoorDmoderate

5、（）is a full nautical record of a ships

（）is a full nautical record of a ships voyage, written up at the end of each watch by the officer of the watch.ASea protestBDeck logCAccident reportDSeamans book

6、At 0815，visibility is excellent and yo

At 0815，visibility is excellent and you can see Montauk Point. Montauk Point Light is（）.Ashown from a brown towerBequipped with a fog diaphoneClighted 24 hoursDis 79 feet (24 meters) high