Column A Column B
Mr. and Mrs. Smith's combined Mr. and Mrs. Smith's combined
annual income in 1988 annual income in 1989
A.if the quantity in Column A is greater
B.if the quantity in Column B is greater
C.if the two quantity are equal
D.if the relationship cannot be determined from the information given
第3题
再结晶后( )
(A)形成等轴晶,强度增大 (B)形成柱状晶,塑性下降
(C)形成柱状晶,强度升高 (D)形成等轴晶,塑性升高
第5题
A、强度、硬度降低,塑性、韧性升高
B、强度、硬度升高,塑性、韧性降低
C、强度、硬度、塑性、韧性都升高
D、强度、硬度、塑性、韧性都降低
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