单选

A mercurial barometer at sea is subject to rapid variations in height (pumping) due to thepitch and roll of the vessel. To avoid this error, measurements of atmospheric pressure at sea are usually measured with a(n) ______.

A.syphon barometer
B.cistern barometer
C.aneroid barometer
D.fortin barometer

试题出自试卷《甲类三副航海英语试题及答案(2)》

参考答案

查看试卷详情

相关试题

A qualified deck officer should be______the watch．
- A.in charge of
- B.arranged
- C.decided to
- D.the depth of
点击查看答案
A pumproom is suspected of accumulating gases after a ventilation machinery breakdown.Where should the combustible gas indicator case be placed when testing the pumproom atmosphere for combustible gases? ______.
- A.In the lower level of the pumproom
- B.In the middle level of the pumproom
- C.In the upper level of the pumproom
- D.On the deck outside the pumproom
点击查看答案
A protective suit which reduces the body heat-loss of a person wearing it in cold water is called______．
- A.water suit
- B.diving suit
- C.immersion suit
- D.swimming suit
点击查看答案
A proper look-out shall be maintained ______.
- A.only at night
- B.only during restricted visibility
- C.at night and during restricted visibility
- D.at all times
点击查看答案
A position obtained by crossing lines of position taken at different times and advanced to acommon time is a(n) ______.
- A.dead-reckoning position
- B.running fix
- C.estimated position
- D.Fix
点击查看答案
A position that is obtained by applying estimated current and wind to your vessel’s courseand speed is a(n) ______.
- A.dead reckoning position
- B.estimated position
- C.fix
- D.None of the above
点击查看答案
A position that is obtained by using two or more intersecting lines of position, taken atnearly the same time, is a(n) ______.
- A.estimated position
- B.fix
- C.running fix
- D.dead-reckoning position
点击查看答案
A portable foam (stored-pressure type) fire extinguisher would be most useful in combating a fire in ______.
- A.generators
- B.oil drums
- C.the bridge controls
- D.combustible metals
点击查看答案
A position obtained by applying only your vessel’s course and speed to a known position is a _______.
- A.dead-reckoning position
- B.fix
- C.probable position
- D.running fix
点击查看答案
A polyconic projection is based on a ______.
- A.plane tangent at one point
- B.cylinder tangent at one parallel
- C.cone tangent at one parallel
- D.series of cones tangent at selected parallels
点击查看答案