海船船员考试
单选题The apparent wind can be zero when the true wind is from（）.A ahead and equal to the ship's speedB astern and equal to the ship's speedC ahead and equal to twice the ship's speedD astern and equal to twice the ship's speed
题目
ahead and equal to the ship's speed
astern and equal to the ship's speed
ahead and equal to twice the ship's speed
astern and equal to twice the ship's speed
参考答案和解析
相似问题和答案
第1题：
The best estimate of the wind direction at sea level can be obtained from observing the direction of the ______.
A.cloud movement
B.vessel heading
C.waves
D.swells
第2题：
The velocity of the apparent wind can be more than the true wind，and come from the same direction，if certain conditions are present．One condition is that the ______．
A.Ship's speed must be less than the true wind velocity
B.True wind must be from dead astern
C.True wind velocity must be faster than the ship's speed
D.True wind must be from dead ahead
第3题：
"Can you ()with all the colors of the wind? Can you paint with all the colors of the wind?"
A、see
B、paint
C、write
D、draw
第4题：
In the Northern Hemisphere a wind is said to veer when the wind ______.
A.changes direction clockwise, as from north to east, etc
B.changes direction counterclockwise, as from south to east, etc
C.changes direction violently and erratically
D.remains constant in direction and speed
在北半球大风的风向会顺时针旋转，例如北到东。
第5题：
An anemometer on a moving vessel measures ______.
A.apparent wind speed only
B.true wind speed and true wind direction
C.true wind speed only
D.apparent wind speed and true wind direction
在运动的船上的风速计仅测量视风（相对风）速。
第6题：
When recording the wind direction in the weather log，you would report the ______．
A.direction the wind is blowing toward
B.direction the wind is blowing from
C.duration of the maximum gust of wind
D.wind chill factor
第7题：
A wind vane on a moving vessel shows ______.
A.dead reckoning wind direction
B.true wind direction
C.apparent wind direction
D.estimated wind direction
运动的船上的风向标指示视风的方向。
第8题：
SHIFT OF WIND DIRECTION IN AN ANTICLOCKWISE MANNER, FOR EXAMPLE FROM NORTH TO WEST ( OPPOSITE OF VEERING ) defines ______.
A.Backing (of wind)
B.Veering (of wind)
C.Shifting of wind
D.altering of wind
风使逆时针旋转的，例如北到西，定义为反转。
第9题：
Apparent wind speed blowing across a vessel under tow can be measured by a(n)______．
A.barometer
B.wind vane
C.anemometer
D.Thermometer
视风是通过安装在船上的风速仪测得的。
第10题：
In the Northern Hemisphere, when the wind at your location is northerly, the low pressure center causing the wind is located to your ______.
A.NNW
B.WSW
C.ESE
D.SSW
在北半球，你所在位置有北风，由低压引起的风，低压中心在你的ESE。