海船船员 - 三副

不定项选择题

______:the vertical distance measured on the vessel’s side amidships from the load water line to the upper side of the freeboard deck or a point corresponding to it.

A. Buoyancy
B. Freeboard
C. Draft
Displacement

不定项选择题

A buoy marking a wreck will show a(an) ______.

A. white light FL (2) and a topmark of 2 black spheres
B. occulting green light and may be lettered
C. yellow light and will be numbered
D. continuous quick white light and may be numbered

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不定项选择题

______is a rounded projection at the forward end of a ship which reduces water resistance，thus allowing an increase in speed when the ships is in ballast．

A. Bulbous bow
B. Ellipse bow
Cyclical projection
D. Gnomonic projection

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不定项选择题

A device used to enlarge the size of an existing bore hole, having teeth arranged on its outside circumference to cut the formation as it rotates is a(n) ______.

A. enlarger bit
B. casing bit
C. hole opener
D. casing opener

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不定项选择题

A vessel’s position should be plotted using bearings of ______.

A. buoys close at hand
B. fixed known objects on shore
C. buoys at a distance
D. All of above

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不定项选择题

An uncontrolled flow of gas, oil, or other well fluids into the atmosphere is called a ______.

A. flow
B. breakout
C. kick
D. Blowout

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不定项选择题

A vessel engaged in minesweeping on the high seas carries which of the following day signals ？

A. Two green balls in a vertical line
B. Two black balls in a vertical line
C. A black ball at the foretruck and yardarm ends
D. A shape of two cones point to point

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不定项选择题