你可能感興趣的試題

The shoreline along Rocky Point should give a good radar return because（）.

A.the shore is bluff and rocky
B.of offshore exposed rocks
C.submerged reefs cause prominent breakers
D.the lookout tower is marked with radar reflectors

單項選擇題

The radio waves used for radar are very short，only（）long.

A.a few centimeters
B.a few fathoms
C.a few meters
D.a few feet

99色精品-9色在线-99色在线-99色视频 国产欧美日产一区二区三区_亚洲精品亚洲人成在线观看_四虎在线精品永久观看_免费一级a一片久久精

To determine if risk of collision exists，a vessel which is fitted with radar must use（）.

你可能感興趣的試題

The shoreline along Rocky Point should give a good radar return because（）.

The radio waves used for radar are very short，only（）long.

99色精品-9色在线-99色在线-99色视频国产欧美日产一区二区三区_亚洲精品亚洲人成在线观看_四虎在线精品永久观看_免费一级a一片久久精

To determine if risk of collision exists，a vessel which is fitted with radar must use（）.

The radio waves used for radar are very short，only（）long.