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单选题
The force resulting from the earth’s rotation that causes winds to deflect to the right in the Northern Hemisphere and to the left in the Southern Hemisphere is called（）.
A
Pressure gradient
B
Coriolis effect
C
Aurora borealis
D
Ballistic deflection
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Call the Master and the deck gangB
Slip the stern lines，let the vessel drift into the river，and then anchorC
Let go the starboard anchorD
Obtain assistance and attempt to put some new bow lines out
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单选题Deviation is caused by（）.A
changes in the earth's magnetic fieldB
nearby magnetic land masses or mineral depositsC
magnetic influence inherent to that particular vesselD
the magnetic lines of force not coinciding with the lines of longitude
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单选题Compass deviation is caused by（）.A
magnetism from the earth's magnetic fieldB
misalignment of the compassC
magnetism within the vesselD
a dirty compass housing
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单选题The magnetic compass magnets are acted on by the horizontal component of the Earth’s total magnetic force. This magnetic force is GREATEST at the（）.A
north magnetic poleB
south magnetic poleC
magnetic prime vertical meridianD
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单选题The intensity of an earthquake depends on _____.A
the movements of the earth's shellB
where it takes placeC
the injuries it causesD
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单选题Sidewise force of the propeller tends to throw a vessel’s stern to the right or left，depending on rotation. This force is caused by（）.A
back current from the rudderB
greater pressure on the right or left side of the propeller，depending on rotationC
lower pressure on the right or left side of the propeller，depending on rotationD
torque from the velocity and angle at which the surrounding water impinges upon the propeller blades
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单选题As observed from the Earth，the angle between lines from the Earth to the Sun and the Earth to an inferior planet is known as（）.A
elongationB
conjunctionC
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单选题What is the role the T5 plays?A
Throttles up and down to counteract the buffeting from air molecules.B
Feels the subtle variations in Earth’s tug.C
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Provides powerful force to counteract the drag on Goce.
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单选题The direction of the surface wind is（）.A
directly from high pressure toward low pressureB
directly from low pressure toward high pressureC
from high pressure toward low pressure deflected by the earth's rotationD
from low pressure toward high pressure deflected by the earth's rotation
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单选题To absorb the wear resulting from impeller rotation and abrasives in the liquid, a centrifugal pump is usually fitted with （）.A
lantern ringsB
bearingsC
easing volutesD
wearing rings
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单选题High-speed rotation in a centrifugal purifier can produce a force （） the force of gravity.A
many thousand times larger thanB
the same asC
many thousand times smallerD
none of the above
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单选题On the pole side of the high pressure belt in each hemisphere，the pressure diminishes. The winds along these gradients are diverted by the Earth’s rotation toward the east and are known as the（）.A
geostrophic windsB
doldrumsC
horse latitudesD
prevailing westerlies
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单选题What is the basic principle of the magnetic compass（）.A
Magnetic materials of the same polarity repel each other and those of opposite polarity attractB
The Earth's magnetic lines of force are parallel to the surface of the EarthC
Magnetic meridians connect points of equal magnetic variationD
The compass needle（s）will，when properly compensated，lie parallel to the isogonic lines of the Earth
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单选题The gyrocompass error resulting from your vessel’s movement in OTHER than an east-west direction is called（）.A
damping errorB
ballistic deflectionC
quadrantal errorD
speed error
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单选题We learn from the passage that ______.A
all living things on the earth depend on the sun for their foodB
a forest looks dark in winter because it absorbs solar energyC
only 0.023 of the energy from the sun is made use of on the earthD
greenhouse gases allow heat energy to escape from the earth’ s surface
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单选题The approximate positions of the stars are based on sidereal time，which is based upon rotation of the Earth relative to（）.A
winter solsticeB
autumnal equinoxC
summer solsticeD
vernal equinox
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单选题The directive force of a gyrocompass（）.A
increases with latitude，being maximum at the geographic polesB
decreases with latitude，being maximum at the geographic equatorC
is greatest when a vessel is near the Earth's magnetic equatorD
remains the same at all latitudes
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单选题While your vessel is docked port side to a wharf，a sudden gale force wind causes the vessel’s stern lines to part. The stern begins to fall away from the dock，and no tugs are immediately available. Which measure(s) should you take FIRST?（）A
Notify the engineroom of the need for propulsionB
Shut down any cargo transfer that's in progressC
Let go the port anchor and veer to a short scope of chainD
Obtain assistance from the terminal to put new stern lines out
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单选题From the text we learn that the laser can ______.A
cut a structure from a right positionB
design parts of a complex structureC
measure the distance between planetsD
predict the movement of earth’s plates
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单选题The transition of the Earth’s magnetic field is possibly caused by _____.A
the flows of melted iron inside the EarthB
the periodical movement of the EarthC
the mechanical energy of the solar systemD
the force coming from outer space
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