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【单选题】
下列选项中,不属于 CSS3.0 新增背景设置属性的是A.
background-origin
B.
background-clip
C.
background-size
D.
background-color
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举一反三
【单选题】Even though the pure water is ____ gives sea water its main properties, the salinity of sea water affects both its weight and freezing point.
A.
the one
B.
which
C.
what
D.
that
【简答题】_____是整个软件设计成功的基础和关键所在。
【单选题】We use ( ) to distill fresh water from sea water
A.
sea water pump
B.
fresh water pump
C.
fresh water generator
【单选题】在为儿童进行Mohindra视近检影验光时,需要在检影补偿镜中减去的实验性指定常数是( )。
A.
+2.00DS
B.
+1.75DS
C.
+1.50DS
D.
+1.00DS
【简答题】A．By filtering sea water. B．By treating sea water with chemicals. C．By taking salt out of sea water. D．By drying up sea water.
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