海船船员考试

单选题（）is a type of fog occurring close to the sea surface when the air is dry and cold-probably at least 9℃ below the sea surface temperature.A MIXING FOGB ADVECTION FOGC RADIATION FOGD ARCTIC SEA SMOKE

题目
单选题
（）is a type of fog occurring close to the sea surface when the air is dry and cold-probably at least 9℃ below the sea surface temperature.
A

MIXING FOG

B

ADVECTION FOG

C

RADIATION FOG

D

ARCTIC SEA SMOKE

如果没有搜索结果，请直接 联系老师 获取答案。
如果没有搜索结果，请直接 联系老师 获取答案。
相似问题和答案

第1题：

Three－fourths of the surface of the earth _____ sea.

A: is

B: have been

C: are

D: was


正确答案: A

第2题：

A mobile offshore drilling unit under tow is approaching a fog bank. When should fog signals be started?

A.When the towing vessel enters the fog

B.When the drilling rig enters the fog

C.When the towing vessel can no longer be seen from the rig

D.Immediately


正确答案：D

第3题：

22．In the daytime， when you dive in the sea， you ________

A． can see everything green and blue

B． can- t be in danger

C． can catch nothing

D． can't see anything clearly


正确答案：A
22．A【解析】由第三段前两句可知在光照下，海里一切呈蓝色和绿色。

第4题：

When hugging a bank in a narrow channel，you should take precautions against ______．

A.Bank suction，squat and the effects of vessels passing close aboard

B.Clogged sea chests，plugged sea strainers and overheated machinery

C.Striking underwater obstructions close to the bank

D.All of the above


正确答案：D

第5题：

Advection fog may be formed by cold air passing over a ______.

A.colder sea surface

B.warmer sea surface

C.dry coastal plains

D.high mountain or plateau


正确答案：B

第6题：

Wear occurring at the tips of the reduction gear teeth is usually the result of ______.

A.surface fatigue

B.fretting corrosion

C.heavy overloading

D.gear misalignment


正确答案：D

第7题：

The fog most commonly encountered at sea is called ______.

A.conduction fog

B.radiation fog

C.frontal fog

D.advection fog


正确答案：D

第8题：

Each cylinder liner on the marine medium speed engines _____.

A.is usually cooled by sea water

B.can be replaced when worn out

C.is in direct contact with the water in the bore of the cylinder

D.can t expand when heated


正确答案：B

第9题：

The average height of the surface of the sea for all stages of the tide over a 19 year period is called ______.

A.mean high water

B.mean low water

C.half-tide level

D.mean sea level


正确答案：D

第10题：

______ is a type of fog occurring close to the sea surface when the air is dry and cold-probably at least 9℃ below the sea surface temperature．

A.MIXING FOG

B.ADVECTION FOG

C.RADIATION FOG

D.ARCTIC SEA SMOKE


正确答案：D

更多相关问题
相关内容