(2011.16)
Which one of the following is NOT a vector quantity?
选项:
A:
Linear momentum
B:
Electric field
C:
Average velocity
D:
Instantaneous acceleration
E:
Kinetic energy
Which one of the following is NOT a vector quantity?
Linear momentum
Electric field
Average velocity
Instantaneous acceleration
Kinetic energy
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By computing the area under the acceleration vs. time graph for a fixed time interval of an object’s motion, what quantity has been determined for that object?
选项:A、The average velocity during the time interval
B、The velocity at the end of the time interval
C、The average speed during the time interval
D、The change in velocity during the time interval
E、The velocity at the time midway through the time interval
A proton moves with constant non-zero velocity in a region of space that has a uniform magnetic field directed into the plane of the page. The proton moves directly up the plane of the page. What is the direction of the electric field in this region of space? Ignore gravity.
选项: A:To the left
B:To the right
C:Down the plane of the page
D:Up the plane of the page
E:There is no electric field necessary
make
B:convert
C:do
D:let
A、Gross weight
B、Net weight
C、Weight
D、All of the above
11.250.3.4
B:1.2.3.4
C:45.67.212.100
D:42.257.99.11
brushes
B:the ink stick
C:pigment
D:paper
exfoliation
B:maturation
C:perspiration
D:potation
the going rate
B:the margin rate
C:the market price
D:the optimum price
E:the cost price
physiological ones
B:emotional ones
C:communication ones
D:subjective ones
At point E the marginal product of labor is decreasing
B:At point E the marginal product of labor is negative.
C:At point E the average product of labor is decreasing.
D:At point E the average product of labor is negative.
E:At point E the marginal product of labor is less than the average product of labor.
(1)、How many ways of dealing with energy problems are talked about in the passage?
A:One
B:Two
C:Three
D:Four
B:(2)、We can learn from the passage that .
A:coal is a kind of renewable source
B:coal is not renewable
C:coal can be renewed with new technology
D:coal is the most common source of energy
C:(3)、Special houses are built because they .
A:can save energy
B:can prevent heat
C:can be warmer than other houses
D:can show the skills of the builders
D:(4)、According to the passage, geothermal energy .
A:is heat inside the earth
B:is the temperature of the earth
C:cannot be renewed
D:cannot be used now
E:(5)、At deep, the temperature of the earth rises to nearly 200°C?
A:One km
B:Two km
C:Six km
D:Four km
Protestantism
B:Catholicism
C:Eastern Orthodox
D:Calvinism
on which
B:by which
C:to which
D:from which
Structural variation.
B:Lexical manipulation.
C:Phonetic unity.
D:Semantic unity.
Lamenting Qu Yuan
B:Master Void Rhapsody
C:On Faults of Qin
D:Nine Songs
demand deficit
B:surplus
C:equilibrium point
D:shortage
E:supply schedule
Phonetic manipulation.
B:Lexical manipulation.
C:Syntactical manipulation.
D:Figures of speech.
carbon dioxide, a greenhouse gas
B:oxygen that no one is able to get by without
C:methane gas
D:sulfur dioxide
Outside the subject or field_____
选项: A:in case
B:in effect
C:in question
D:in detail
bacteria and nutrients
B:sediments
C:petroleum products
D:heat
E:all answers are ture
Singapore
B:Denmark
C:Great Britain
D:Japan
A.Edgar Allan Poe
B.Walt Whitman
C.Emily Dickinson
D.Henry Wadsworth Longfellow
tree
B:crash
C:typewriter
D:bang
Phonology
B:pragmatics
C:syntax
D:speech
Feng:
B:Song:or
C:poems
D:Ya:
“All planets in the solar system follow elliptical orbits with the Sun located at one focus of the ellipse.” This statement is best summarized by which one of the following choices?
选项: A:Kepler’s First Law
B:Kepler’s Second Law
C:Newton’s Universal Law of Gravitation
D:Einstein’s Law of Gravity
E:Schwarzchild’s Law of Orbits
Propriety
B、Inactivity
C、Fidelity
D、Humanity