默认题库 - 船舶强度资料

单选题

From which type of cloud can a tornado or waterspout develop?（）

A. Nimbostratus
B. Altostratus
Cumulonimbus
D. Cirru

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单选题

卧席客舱中（）每一房间设卧席最少。

A. 2等
B. 3等
C. 4等
D. 1等

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单选题

Given the same water depth and line tension，the holding power of a 19 pound/foot wire rope mooring system in comparison to the holding power of a 90 pound/foot chain mooring system will be（）.

A. weaker
B. equal
C. greater
D. indeterminable

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单选题

Great Salt Pond on Block Island is（）.

A. entered through a dredged cut
B. not accessible in easterly gales
C. available for vessels up to a maximum draft of 8 feet (2.4m)
D. not affected by the tide

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单选题

Guide tolerances during elevation of the jack-up rig will（）.

A. reduce spud can bearing pressure
B. keep the unit level and reduce overloading
C. reduce stresses on the hull
D. minimize the potential for punch-through

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单选题

How do the height and location of a tug’s towing bitts relate to the danger of tripping?（）

A. The further forward and closer to amidships the more readily the tug will trip
B. Placement further aft permits more effective pulling，better steering and eliminates the danger of tripping
C. Installing the bitts down low lowers the center of gravity
D. The height and position of towing bitts has no significance

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单选题

For optimum stability during jacking operations，mat ballast tanks or spud cans should be（）.

A. empty
B. fully ballasted
C. partially ballasted
D. sealed

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单选题

Generally speaking，you should expect to find low atmospheric pressure prevailing in the earth’s（）.

A. equatorial area
B. polar regions
C. mid-latitudes
D. All of the above

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单选题

How can the Coast Guard determine that a crew member is “able to understand any order spoken by the officers”?（）

A. Require a demonstration by the officer and the crew member
B. Require a written test
C. Require that an interpreter be provided
D. All of the above

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单选题

Generally speaking，in the Northern Hemisphere，when winds are blowing from between SE and SW the barometric reading（）.

A. makes no change at all
B. is somewhat lower than it would be for winds from a northern quadrant
C. is uncertain and may fluctuate by increasing and decreasing
D. is somewhat higher than it would be for winds from the northern quadrant

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