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【单选题】
排中律用公式可以表示为什么?A.
A或者非A
B.
A不是非A
C.
A或者B
D.
A且非A
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
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【简答题】1,固态物质分晶体和非晶体两类,金属属于哪类?晶体物质有何特征? 2,常见的金属晶格类型有哪些?晶格类型与金属的性能有何关系? 3,纯金属的结晶过程(规律)如何?冷却曲线什么样?什么是过冷度? 4,什么是单晶体、多晶体?何谓晶粒、晶界? 5,纯金属的实际晶体结构如何? 6,晶粒的大小与金属的性能有何关系?获得细晶粒的方法有哪些?
【单选题】The terrible earthquake in Yushu, ________so many buildings, made many people homeless. [ ]
A.
destroyed
B.
had destroyed
C.
having destroyed
D.
destroys
【单选题】-Some dinosaurs were the __________ of buildings. -They were as __________ as buildings.
A.
big, bigger
B.
size, big
C.
size, the biggest
【单选题】Why are fabrics good for public buildings?
A.
Because they prevent buildings from noise.
B.
Because they make buildings strong.
C.
Because they make buildings beautiful.
D.
Because they make buildings special.
【简答题】常见的纯金属晶格类型有哪些?试绘图说明其特征。试计算面心立方晶格的致密度。
【单选题】Three-fourths of the buildings ______.
A.
was destroyed
B.
is destroyed
C.
were destroyed
D.
has been destroyed
【单选题】Why are fabrics good for public buildings?
A.
They prevent buildings from noise.
B.
They make buildings strong.
C.
They make buildings beautiful.
D.
They make buildings special.
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