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【单选题】
在片剂辅料中,关于淀粉特点的叙述,正确的是
A.
干淀粉可以充当黏合剂
B.
淀粉可压性好
C.
淀粉湿潮解
D.
淀粉有助流性
E.
干淀粉可充当崩解剂
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举一反三
【单选题】A new way of teaching _____ in the article can make learning easier.
A.
introduced
B.
has introduced
C.
was introduced
D.
is being introduced
【单选题】The colourful illustrations included in the new edition of the book make it______attractive.
A.
much more
B.
most all
C.
the more
D.
that most
【单选题】_______ you start eating in a healthier way, weight control will become much easier.
A.
Unless
B.
Although
C.
Before
D.
Once
【单选题】Looking at a situation in a new way will make _______ easier to find new solutions.
A.
us
B.
this
C.
one
D.
it
【简答题】如图18-1所示,已知二次函数 与x轴分别交于点A(2,0)、 B(4,0),与y轴交于点C(0,-8t)(t>0) 小题1:求a、c的值及抛物线顶点D的坐标(用含t的代数式表示); 小题2:如图18-1,连接AC,将△OAC沿直线AC翻折,若点O的对应点O′恰好落在该抛物线的对称轴上,求实数t的值; 小题3:如图18-2,在正方形EFGH中,点E、F的坐标分别是(4,-4)、(4,-3),边HG...
【简答题】如图1所示,已知二次函数y=ax 2 -6ax+c与x轴分别交于点A(2,0)、B(4,0),与y轴交于点C(0,-8t)(t>0). (1)求a、c的值及抛物线顶点D的坐标(用含t的代数式表示); (2)如图1,连接AC,将△OAC沿直线AC翻折,若点O的对应点O′恰好落在该抛物线的对称轴上,求实数t的值; (3)如图2,在正方形EFGH中,点E、F的坐标分别是(4,-4)、(4,-3),边HG...
【单选题】牙周膜的功能不包括( )
A.
支持功能
B.
稳定功能
C.
免疫功能
D.
营养功能
E.
感觉功能
【单选题】Beauty has always been regarded as something praiseworthy. Almost everyone thinks attractive people are happier and healthier, have better marriages and have more respectable jobs. Personal advisors g...
A.
disadvantage
B.
advantage
C.
misfortune
D.
trouble
【简答题】如图所示,在梯形ABCD中,已知AB∥CD, AD⊥DB,AD=DC=CB,AB=4,以AB所在直线为x轴,过D且垂直于AB的直线为y轴,建立平面直角坐标系。 (1)求∠DAB的度数及A、D、C三点的坐标; (2)求过A、D、C三点的抛物线的解析式及其对称轴L; (3)若P是抛物线的对称轴L上的点,那么使△PDB为等腰三角形的点P有几个?(不必求点P的坐标,只需说明理由)
【简答题】阅读理解。 Beauty has always been regarded as something praiseworthy.Almost everyone thinks attractive people are happier and healthier,have better marriages and have more respectable occupations. Personal...
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