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【单选题】
关于打印样式,说法错误的是()
A.
打印样式通过确定打印特性(例如线宽、颜色和填充样式)来控制对象或布局的打印方式
B.
打印样式有两种类型:颜色相关和命名
C.
颜色相关打印样式表的扩展名为.cpt
D.
命名打印样式表文件的扩展名为.stb
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举一反三
【单选题】We all agree that the products of this factory are of better ________.
A.
quality
B.
quantity
C.
principal
D.
identity
【单选题】巴比妥类药物与碱共沸,水解释放出氨气,是由于
A.
分子结构中含有硫元素
B.
分子结构中含有丙烯基
C.
分子结构中含苯取代基
D.
分子结构中含有羰基
E.
分子结构中含有酰亚胺基团
【单选题】Only the factory ____ yesterday ____  this kind of machines.
A.
did we visit; does it produce
B.
did we visit; produces
C.
we visited; produces
D.
we visited; does it produce
【单选题】If there is a shortage of factory laborers, we would expect
A.
the wages of factory laborers to increase.
B.
the wages of factory laborers to decrease.
C.
the prices of factory commodities to decrease.
D.
a decrease in the demand for substitutes of what this factory produce.
【单选题】巴比妥类药物与银盐反应是由于结构中含有
A.
酰亚氨基
B.
酰肿基
C.
酚羟基
D.
芳香伯氨基
【简答题】巴比妥类药物分子结构中含有丙二酰脲基团,其特性反应为
【单选题】This is the factory ________ we visited last Monday.
A.
that
B.
where
C.
in which
D.
the one
【单选题】This is the factory ____ we worked a year ago.
A.
where
B.
that
C.
which
D.
on which
【单选题】鉴别巴比妥类药物的硝化反应,主要是利用该类药物结构中的
A.
不饱和碳氧双键
B.
不饱和碳氮双键
C.
互变异构中形成是羟基
D.
取代基中含有的双键
E.
取代基中含有的苯环
【单选题】The factory­­­­­­________ we visited yesterday was the one _______ I once worked.
A.
where; which
B.
which; which
C.
which; where
D.
where; where
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