單項(xiàng)選擇題

The luminous range of a light takes into account the（）.

A.glare from background lighting
B.existing visibility conditions
C.elevation of the light
D.observer's height of eye

你可能感興趣的試題

Restricted areas at locks and dams are indicated by（）.

A.flashing red lights upstream and fixed red lights downstream
B.yellow unlighted buoys
C.signs and/or flashing red lights
D.red daymarks upstream and green daymarks downstream

單項(xiàng)選擇題

Preferred channel buoys indicate the preferred channel to transit by（）.

A.odd or even numbers
B.the color of their top band
C.the location of the buoy in the channel junction
D.the buoy's light rhythms

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

The luminous range of a light takes into account the（）.

你可能感興趣的試題

Restricted areas at locks and dams are indicated by（）.

Preferred channel buoys indicate the preferred channel to transit by（）.

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