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The line which connects the points of zero magnetic dip is().
A . An agonic line
B . The magnetic equator
C . A magnetic meridian
D . All of the above
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The term "pour point" is defined as the lowest temperature at which lubricating oils will flow ().
A . rapidly
B . by gravity
C . through a standard orifice at a specified temperature
D . at a rate of 60cc per second
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The path that a vessel is expected to follow,represented on a chart by a line drawn from the point of departure to the point of arrival,is the().
A、DR plot
B、track line
C、heading
D、estimated course
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Which of the following statements correctly describes the characteristics of a Frame Relay point-to-point subinterface?()
A . Needs to use Inverse ARP.
B . Maps a single IP subnet per DLCI.
C . Maps a single IP subnet across multiple DLCIs.
D . Resolves NBMA (non broadcast multi access) split horizon issues.
E . Requires use of the frame-relay map command.
F . None of the above
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The steady state difference between the control point and the value of the controlled variable, corresponding with the set point, is known as ()
A、dead band
B、control point
C、deviation
D、offset
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When the dew point of the outside air is lower than or equal to the dew point of the air in the cargo hold,you should().
A . secure all ventilation
B . shut down the exhaust blowers
C . shut down the intake blowers
D . ventilate the cargo hold
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Obviously, for a given fuel oil, its pour point is () its cloud point.
A . lower than
B . higher than
C . as same as
D . better tha
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Which of the petroleum products listed has the lowest flash point?()
A . Hydraulic oil
B . Lubricating oil
C . Diesel oil
D . Refrigeration oil
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The center of flotation of a vessel is the point in the waterplane().
A . about which the vessel lists and trims
B . which coincides with the center of buoyancy
C . which,in the absence of external forces,is always vertically aligned with the center of gravity
D . which is shown in the hydrostatic tables as VCB
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The flash point of a liquid refers to the temperature ()
A . at which a liquid will give off inflammable vapors
B . at which a liquid will burn steadily
C . at which a liquid will explode
D . that a liquid must reach before it will flow readily
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As the temperature of the air reaches the dew point,().
A . rain must develop
B . fog may form
C . it begins to snow
D . water freeze
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Which of the following statements is correct concerning the “flash point ” of a liquid?()
A . It is lower than the ignition temperature
B . It is the temperature at which a substance will spontaneously ignite
C . It is the temperature at which a substance, when ignited, will continue to bum
D . It is the temperature at which the released vapors will fall within the explosive range
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With impassioned pleas like this and billions of private and state dollars pouring into research on human ES cells, it often seems therapeutic applications of ES cells must be just around the corner.
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the dc operation point should avoid the region of ( )
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The _____ takes the customer’s point of view.
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The key to an effective presentation is to state your points clearly and compare each of your points at the end of your presentation.
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The key points of a good briefing are:
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Key Points of Interpreting the Natural Landscape
A、Be familiar with the route
B、Master some knowledge of the natural sciences
C、Master some knowledge of literature
D、Know some cultural knowledge
E、Flexible use of interpreting skills
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Under the()terms,the point of the transferring risks is when the goods pass the ship’s mil at the named point of shipment.
<img src='https://img2.soutiyun.com/ask/uploadfile/2604001-2607000/6a29174539e839f5612bbea3c13dd94e.gif' />
此题为多项选择题。
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Hundreds of thousands of peasants pour into the city to try their (运气) every year.
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Which of the following best states the author's main point about the theory of cultural essentialists?
A.It is a sterile, abstract theory, which fails to make experimental predictions.
B.It is a historically important element in the linguistic discourse on enculturation, but is incorrect.
C.It is a convincing and cogent alternative to the theories of linguistic expressivists.
D.It is experimentally accurate but theoretically inconsistent.
E.It is overly focused on the complicated nature of non-linguistic reality.
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The main point of this text is
A.Aesop" s fables provide a valuable glimpse into early Greek thought and beliefs.
B.the most efficient and reliable way to study the values system of an ancient culture is through study of its mythology.
C.without a thorough examination of a society"s fables and other mythology, a cultural study on that society would be only partial.
D.through the study of a culture" s mythological tradition, one can discern some of the underlying beliefs that shaped those stories.
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Which of the following is the best reason for pouring a condensation impression material as soon as possible()
A.the degree of polymerization of condensation polymers is initially high and then decreases with time
B.evaporation of a volatile by-product causes shrinkage ofthe set material
C.If left unpoured,condensation impression materials expand as they absorb water from air
D.condensation polymers will start to react with the polymer of the impression tray and cause distortion
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The values of the vapor pressure lowering,boiling point elevation, freezing point depression of nonelectrolyte depend on()
A.the volume of the solution
B.the nature of the solute
C.the molality of the solute in the solution
D.the temperature of the solution