题目内容
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The concentration of carbon dioxide is caused by ______.
A．the heat accumulated in the atmosphere
B．the burning of coal
C．the wide use of renewable energy
D．the destruction of the tropical rain forest
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更多“The concentration of carbon dioxide is caused by ______.A．the heat accumulated in the atmo”相关的问题
A、decrease
B、increase
C、not change
D、be any possible value.
A、All materials have a pronounced or obviously yield point.
B、Some materials do not have clear yield point.
C、Grey cast iron does not have yield point
D、None of above is correct.
A、larger, greater
B、larger, smaller
C、lower, greater
D、None of above is correct
A、The greater the modulus, the stiffer the material.
B、The stiffer the material, the higher the resistance of the material to deformation.
C、The higher the magnitude of elastic modulus, the higher the magnitude of the inter-atomic bonding forces in a material.
D、The higher the magnitude of elastic modulus, the lower the magnitude of the intermolecular bonding forces in a material.
A、Off-set yield strength is the stress corresponding to the plastic limit.
B、It is the lowest stress at which a limited amount of plastic deformation occurs.
C、Off-set yield strength is the stress corresponding to the elastic limit.
D、If a plastic strain of 0.002 in./in. can be tolerated, the stress that produces this strain is designated as the yield strength of the material at 0.2% offset.
A、Charpy impact test
B、Izod impact test
C、Knoop Hardness
D、None of the above is correct
A、Brinell Hardness
B、Vickers Hardness
C、Rockwell Hardness
D、Mohs Hardness
A、Constant Stress
B、Temporary Loading
C、Repetitious Stress
D、Reversal Stress
A、Ions
B、Anode
C、Cathode
D、Electrolyte
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